Retrievals that were wanted, attempted and not completed. Recorded on the source rather than quietly dropped.
42 gaps are recorded across 42 sources. Each names what was wanted, why it was not obtained, when it was attempted, and what CiderHQ publishes in its place — which is usually nothing.
The line-by-line entry from the IARC classification list giving the exact agent wording and volume for each alcohol-related agent.
International Agency for Research on Cancer, World Health Organization — IARC Monographs on the Identification of Carcinogenic Hazards to Humans — alcohol consumption and ethanol in alcoholic beverages. Attempted 2026-08-24.
Why it did not happen. The list is delivered by a client-side application that returns no content to a plain retrieval. The volume identity and its Group 1 scope were confirmed from the publications catalogue instead.
What is published instead. CiderHQ names the agent as IARC names it — consumption of alcoholic beverages — and cites Volume 100E. It does not state a separate classification for acetaldehyde, because the agent IARC evaluated is acetaldehyde *associated with the consumption of alcoholic beverages*, and that wording could not be confirmed to the letter.
The register entries for the cider and perry designations, with their registration dates and specification links.
European Commission — eAmbrosia — the EU geographical indications register. Attempted 2026-08-24.
Why it did not happen. eAmbrosia is a client-side application; a plain retrieval returns the shell and no register content. Registration dates for the UK names were obtained from the Defra register instead, and the Pays d’Auge specification directly from INAO.
What is published instead. Designation records cite the register that was actually read for each fact, rather than citing eAmbrosia for figures taken from somewhere else.
A working address for the consolidated text of the single common market organisation regulation.
European Union — Regulation (EU) No 1308/2013 establishing a common organisation of the markets in agricultural products. Attempted 2026-08-25.
Why it did not happen. The same EUR-Lex behaviour as the food information regulation: HTTP 200 and the Official Journal daily index rather than the instrument, in every URL form CiderHQ holds. Recorded on 2026-08-25.
What is published instead. This source is cited for structural statements about the EU framework rather than for figures, and every such statement is carried jointly by the national instrument it operates through. Nothing on the site depends on this address resolving.
A working address for the consolidated text of the regulation.
European Union — Regulation (EU) No 1169/2011 on the provision of food information to consumers. Attempted 2026-08-25.
Why it did not happen. Checked on 2026-08-25: the registered ELI address returns HTTP 200 and the Official Journal’s daily index instead of the instrument. So does the ELI address with a language segment, and so does the CELEX legal-content form. This is not a dead link — a link checker reading status codes would report it healthy — and it is the reason this project now keeps a source-health register that records what came back rather than what code it came back with.
What is published instead. The passages recorded on this source were verified against the document on 2026-08-24 and stand. Nothing is republished on the strength of the address. A reader following the link today reaches the Official Journal index and can search it for the instrument by number.
The cahiers des charges for Cornouaille, Cidre de Bretagne, Cidre du Cotentin, Cidre de Normandie and Poiré Domfront, at the same level of detail.
INAO — Institut national de l’origine et de la qualité (INAO). Attempted 2026-08-24.
Why it did not happen. Only the Pays d’Auge specification was retrieved and read in this pass. The others are published on the same registers and are reachable; the work has not been done.
What is published instead. Those designations keep the structural descriptions they had. Where CiderHQ states a number for them it is attributed and dated as before, and no figure has been carried across from Pays d’Auge by analogy.
A verbatim reading of the articles and annexes, to quote rather than paraphrase.
Légifrance, JORF texte n° JORFTEXT000051223792 — Décret n° 2025-162 du 20 février 2025 portant application de l’article L. 412-1 du code de la consommation en ce qui concerne les cidres et poirés. Attempted 2026-08-24.
Why it did not happen. legifrance.gouv.fr refuses automated retrieval with HTTP 403. The text was reached only through an intermediary that returns a reading rather than the source, which is enough to establish what the instrument says and not enough to quote it.
What is published instead. The operative figures are carried on `unicid`, the interbranch organisation’s own briefing, which reproduces the sweetness table verbatim and is registered separately with the quotation. Where the two are cited together, the decree is the authority and the briefing is the text CiderHQ actually read.
The current text of Title 27 from the electronic Code of Federal Regulations.
United States Government — Title 27 of the Code of Federal Regulations — Alcohol, Tobacco Products and Firearms. Attempted 2026-08-25.
Why it did not happen. ecfr.gov returned HTTP 503 on 2026-08-25. That reads as a service problem rather than a removal, but a 503 is not a reading and this register does not record one as though it were.
What is published instead. The passages already recorded against this source were verified on 2026-08-24 and stand. No new figure is taken from it until the address answers again.
The current standard-drink definition and the alcohol guidance chapter, read at the source.
US Departments of Agriculture and Health and Human Services — Dietary Guidelines for Americans — alcohol. Attempted 2026-08-24.
Why it did not happen. The host closed the HTTP/2 stream mid-response on repeated attempts and returned no usable content.
What is published instead. CiderHQ states the US standard drink only where another opened source carries it, and attributes no figure to this document unread.
The forskrift itself — the regulation protecting each name — rather than the register’s account of it.
Stiftelsen Norsk Mat (formerly Matmerk) — Beskyttede betegnelser — the Norwegian register of protected designations. Attempted 2026-08-25.
Why it did not happen. The register links to Lovdata without giving the regulation number, and Lovdata could not be searched by retrieval on 2026-08-25.
What is published instead. Requirements are recorded as the national register states them, attributed to the register rather than to the regulation, and every one of them is quoted in Norwegian above so a reader can check the wording.
The original per-cultivar analysis tables, with sample counts and season ranges.
National Fruit and Cider Institute / University of Bristol — Long Ashton Research Station cider fruit analyses. Attempted 2026-08-24.
Why it did not happen. The station closed in 2003 and its annual reports are not consolidated in a single open archive. Figures reach the present mostly through secondary compilations. A specific citation was recovered on 2026-08-24 from the Herefordshire Cider PGI specification, which points readers to “Cider Apples and Their Character I, II, III and IV” by R. R. Williams and R. D. Child in the Long Ashton Research Station Annual Reports for 1961–1964 — so the tables have a name and a location now, even though no digitised copy was found.
What is published instead. CiderHQ records Long Ashton figures as classification bands and ranges attributed to the programme rather than as precise per-cultivar values it cannot verify against the original tables.
The programme site at the address CiderHQ had registered for it.
Cornell University, School of Integrative Plant Science — Cornell Cider Research and Extension programme. Attempted 2026-08-24.
Why it did not happen. The registered host cider.cals.cornell.edu no longer resolves. The programme now publishes at hardcider.cals.cornell.edu, and the record has been corrected. A registered-but-never-opened source hides exactly this kind of rot.
What is published instead. The current address was located and read, and the publication list verified against it.
Confirmation of four published figures that cannot describe real fruit.
Washington State University Northwestern Washington Research and Extension Center — Washington State University cider research programme. Attempted 2026-08-24.
Why it did not happen. The database prints a fruit diameter of 258 inches for Fillbarrel, juice yields for Redstreak and Taylor’s that convert to more than 900 L per tonne, and 0.11% acid for Bramley’s Seedling beside a pH of 3.12. Each looks like a lost decimal point, but CiderHQ has no basis for deciding where the point belonged.
What is published instead. Each figure is withheld on the cultivar it belongs to, with the published value and the reason shown, rather than republished, silently dropped, or adjusted to something plausible.
Direct retrieval of the institute’s cultivar and fermentation publications.
Principado de Asturias — Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA). Attempted 2026-08-25.
Why it did not happen. serida.org returns HTTP 403 to automated retrieval, checked 2026-08-25. The institute is real and active and its work is not in doubt; its web server declines robots.
What is published instead. SERIDA’s work reaches this site through its own open repository at ria.asturias.es and through the peer-reviewed papers its staff publish, both of which are registered separately and were read in full. Where a claim rests on SERIDA it names the paper rather than the institute where one exists.
Sorbitol measured variety by variety, in named perry pears, by a stated method.
Various journals and institute reports — Research on pear juice composition and sorbitol in perry. Attempted 2026-08-25.
Why it did not happen. Nothing CiderHQ has reached publishes it. The Long Ashton perry pear tables report gravity, acidity and tannin and not sorbitol; the modern Three Counties survey reports the phenolic fractions and the individual amino acids and not sorbitol, and its author says plainly that sorbitol “was not directly measured” in the juices he fermented — inferring it instead from how high the ferments finished. This is a conspicuous gap: sorbitol is the single most repeated fact about perry and nobody appears to have published it per cultivar.
What is published instead. Perry pear records carry a pooled pear-juice range from the general literature, marked on every measurement as a general figure for pear juice rather than as an analysis of that cultivar, with the reason it is recorded on that record stated alongside it.
The per-cultivar tables from the full text, with sample counts and season-by-season figures.
Miles, King, Alexander and Scheenstra, HortTechnology 27(3):431–439 — Evaluation of Flower, Fruit, and Juice Characteristics of a Multinational Collection of Cider Apple Cultivars Grown in the U.S. Pacific Northwest. Attempted 2026-08-24.
Why it did not happen. journals.ashs.org serves a client-side application and returns HTTP 403 to retrieval. The publisher location Unpaywall lists is the same blocked address, and no repository copy was found.
What is published instead. The per-cultivar figures CiderHQ publishes come from the programme’s own cultivar database, which covers a longer period (2002–2017) and a larger set of fruit. This paper is cited for the findings its abstract states.
The per-cultivar yeast assimilable nitrogen figures behind the study means.
Boudreau, Peck, O’Keefe and Stewart, Food Science & Nutrition 6(1):119–123 — Free amino nitrogen concentration correlates to total yeast assimilable nitrogen concentration in apple juice. Attempted 2026-08-24.
Why it did not happen. The published figures report the two seasons in aggregate and present the per-cultivar data as plotted regressions rather than as a table of values.
What is published instead. CiderHQ publishes the study-wide range and means with their sample count, and does not attribute a nitrogen figure to any individual cultivar.
The per-variety phenolic tables and the degree-of-polymerisation distributions.
Guyot, Marnet, Sanoner and Drilleau, Journal of Agricultural and Food Chemistry 51(21):6240–6247 — Variability of the Polyphenolic Composition of Cider Apple (Malus domestica) Fruits and Juices. Attempted 2026-08-24.
Why it did not happen. pubs.acs.org is paywalled and refuses automated retrieval; the HAL record for the paper is served behind an access-control challenge that also refuses retrieval. No open repository copy was found.
What is published instead. CiderHQ publishes only the figures the abstract states, attributed to the study as a whole rather than to any named variety.
The panel scores and the concentration series behind the two abstracts.
Symoneaux, Baron, Marnet, Bauduin and Chollet, LWT — Food Science and Technology 57:22–27; and Symoneaux, Chollet, Bauduin, Le Quéré and Baron, LWT 57:28–34 — Impact of apple procyanidins on sensory perception in model cider (parts 1 and 2). Attempted 2026-08-24.
Why it did not happen. Both papers are paywalled on ScienceDirect and no repository copy was found.
What is published instead. CiderHQ states the direction of each effect and the one concentration the abstracts name, and does not publish a curve it has not seen.
The strain tables and the malolactic efficiency results.
Sánchez, Coton, Coton, Herrero, García and Díaz, Food Microbiology 32(1):32–37 — Prevalent lactic acid bacteria in cider cellars and efficiency of Oenococcus oeni strains. Attempted 2026-08-24.
Why it did not happen. Paywalled on ScienceDirect; no repository copy found.
What is published instead. CiderHQ cites the species identification the abstract states and does not reproduce efficiency figures it has not read.
The strain identities, the mash chemistry before and after, and the ester quantification.
Fejzullahu, Kun-Farkas and Kun, Acta Alimentaria 53(3):360–372 — Enhancing fruit spirit quality: Novel approaches to mash acidification techniques. Attempted 2026-08-24.
Why it did not happen. akjournals.com returns HTTP 403 to automated retrieval and no repository copy was found.
What is published instead. CiderHQ publishes only the two figures the abstract states, and says that the substrate was apple mash destined for spirit rather than cider.
The published tables and methods as printed in the journal.
Journal of Agricultural and Food Chemistry — Characterization of the Polyphenol Composition of 20 Cultivars of Cider, Processing, and Dessert Apples (Malus × domestica Borkh.) Grown in Virginia. Attempted 2026-08-25.
Why it did not happen. The article sits behind a subscription. The table CiderHQ transcribes was republished, with attribution, on a specialist compilation page whose author is a phenolic chemist; the figures are therefore secondary, and no part of the paper’s discussion is cited.
What is published instead. Only the numeric table is used, and every measurement records that it reaches the site through a transcription rather than from the journal.
A resolved genotype for the selections the study could not settle.
Harper, Winfield, Copas, Przewieslik-Allen, Barker, Burridge, Hughes, Davies and Edwards, University of Bristol, in PLANTS, PEOPLE, PLANET 2(2) — The Long Ashton Legacy: Characterising United Kingdom West Country cider apples using a genotyping by targeted sequencing approach. Attempted 2026-08-25.
Why it did not happen. The authors state that where only two samples of a cultivar were available and those two differed, they could not determine which — if either — was correct, and they name Amelia, Connie, Eleni and Nicky. CiderHQ holds no record for any of the four and would need a resolved genotype before creating one.
What is published instead. The four unresolved selections are not given records. The site publishes the twenty-three whose grouping the study states.
The per-cultivar figures — titratable acidity, malic acid, pH, epicatechin, glucose and fructose for each of the five varieties.
Campo, Santos, Berregi and Munduate, Food Control 16(6) — Differentiation of Basque cider apple juices from different cultivars by means of chemometric techniques. Attempted 2026-08-25.
Why it did not happen. Subscription only. Unusually, the abstract is elided from Semantic Scholar and absent from OpenAlex, so not even the summary figures could be read at source. Secondary summaries quote a total sugar range of 96.7 to 128.7 grams per litre across the five varieties; CiderHQ has not seen that in the paper and does not publish it as a measurement.
What is published instead. The Basque cultivar records carry no figure from this study. They cite it for the qualitative finding — that the five are chemically separable — and for nothing else.
Sorbitol in any Austrian Mostbirne.
Wurm, Gössinger, Wendelin and Korntheuer, HBLA und Bundesamt für Wein- und Obstbau Klosterneuburg, in Mitteilungen Klosterneuburg 61 (2011): 236–246 — Prüfung ausgewählter Mostbirnensorten als Spindel unter Bio-Produktionsbedingungen. Attempted 2026-08-25.
Why it did not happen. The trial did not measure it and no other Austrian source CiderHQ has reached does either. Sorbitol is the most-repeated fact about perry anywhere, and on the Austrian side it is unevidenced in both directions.
What is published instead. No sorbitol figure is published for any Austrian pear, and the gap is stated on the dataset.
The consolidated text as served by the Austrian legal information system itself.
Republic of Austria, made under §§ 35, 36 and 37(1) of the Weingesetz 2009; consolidated text published by the Bundeskellereiinspektion — Obstweinverordnung, BGBl. II Nr. 18/2014, consolidated. Attempted 2026-08-25.
Why it did not happen. RIS refused every automated request with a security challenge. The text used is the federal cellar inspectorate’s mirror, which reproduces the RIS consolidated version and is headed and footed as such.
What is published instead. The mirror is cited and identified as a mirror.
Any validation of the Klosterneuburg scale for pear must, where sorbitol contributes to dissolved solids and the 17:20 ratio Babo derived from grapes may not hold.
Höhere Bundeslehranstalt und Bundesamt für Wein- und Obstbau, Klosterneuburg, published 25 June 2020 — 150 Jahre Klosterneuburger Mostwaage. Attempted 2026-08-25.
Why it did not happen. Nothing found. The point appears to be unaddressed in the literature; tellingly, Klosterneuburg’s own perry pear trial reports °Oechsle rather than °KMW.
What is published instead. CiderHQ states the scale’s grape derivation wherever it appears and does not convert a pear figure into or out of °KMW.
The consolidated text from the Rechtsinformationssystem itself rather than from a mirror.
Republic of Austria, BGBl. I Nr. 111/2009 as amended; consolidated text mirrored by the Bundeskellereiinspektion — Weingesetz 2009 — Bundesgesetz über den Verkehr mit Wein und Obstwein. Attempted 2026-08-25.
Why it did not happen. ris.bka.gv.at answers automated requests with a bot challenge and returns no text.
What is published instead. The federal cellar inspectorate’s mirror is used, and the indirection is stated wherever the act is cited.
The 2025 cider style guidelines in full, with the vital statistics for each style.
Beer Judge Certification Program — BJCP Beer Style Guidelines — cider and perry categories. Attempted 2026-08-24.
Why it did not happen. The current guidelines index paginates through a client-side application that returns no style content to a plain retrieval. The existence of the 2025 edition was confirmed; its per-style figures were not.
What is published instead. CiderHQ states BJCP categories as a competition framework and does not publish per-style ABV or gravity ranges attributed to it. Where a strength range is given for a style, it is sourced elsewhere and dated.
The text itself — chapter and page for any figure attributed to it.
Claude Jolicoeur, Chelsea Green Publishing, 2013. ISBN 9781603584739 — The New Cider Maker’s Handbook: A Comprehensive Guide for Craft Producers. Attempted 2026-08-25.
Why it did not happen. The book is in print, not out of copyright, and not held in any open digital collection. Open Library records no scanned copy. There is no lawful route to a full text by retrieval.
What is published instead. Claims resting on this source are general production statements that CiderHQ can also support from an open source, and no number is attributed to it alone. Its state records what was verified: the edition, not the contents.
Per-cultivar descriptions and any acid or tannin figures the Pomona carries.
Liz Copas, The Dovecote Press, 2001. ISBN 9781874336877 — A Somerset Pomona: The Cider Apples of Somerset. Attempted 2026-08-25.
Why it did not happen. In print, in copyright, and not held in any open digital collection; Open Library records no scanned copy.
What is published instead. Cultivar identity claims citing this source are corroborated by the National Fruit Collection or by a trial programme, and CiderHQ publishes no measurement attributed to it.
The variety descriptions and any juice analyses the 1963 volume records.
L. C. Luckwill and A. Pollard (eds), published for the National Fruit and Cider Institute by the University of Bristol, 1963 — Perry Pears. Attempted 2026-08-25.
Why it did not happen. Out of print since the 1960s and not digitised in any open collection. Open Library records no scanned copy and no Internet Archive identifier.
What is published instead. Perry pear identity on this site rests on the National Perry Pear Centre’s living collection and its DNA work, both of which were opened and passage-verified. This source is cited for provenance of the tradition rather than for figures.
A citable, publicly obtainable version of the training material.
Peter Mitchell / Cider and Perry Academy — Cider and perry production technical training material. Attempted 2026-08-25.
Why it did not happen. Verified on 2026-08-25: this is course material distributed to participants rather than a published work. Open Library and the union catalogues hold no record of it, and there is nothing to retrieve.
What is published instead. Every claim citing it is also carried by an open technical source, and CiderHQ attributes no figure to it. It is retained in the register because it is genuinely where a good deal of modern commercial practice was taught, and pretending otherwise would misdescribe the provenance of the practice.
The text of either edition, to attribute a statement to a page.
Annie Proulx and Lew Nichols, Storey Communications, 1997; first published as Sweet & Hard Cider by Garden Way, 1980 — Cider: Making, Using and Enjoying Sweet and Hard Cider. Attempted 2026-08-25.
Why it did not happen. Both Internet Archive holdings are marked access-restricted and sit in the inlibrary and printdisabled collections. Borrowing is a lawful route for a person and not one available to automated retrieval, and CiderHQ does not record a book as read because a catalogue confirms a scan exists.
What is published instead. Claims citing this source are general statements about North American practice that are also carried by an open source. The edition history is now recorded, so a future reading can say which text it read.
The text, to attribute a statement to an edition and a page.
Ben Watson, The Countryman Press, first edition 1999; third edition 2013 — Cider, Hard and Sweet: History, Traditions, and Making Your Own. Attempted 2026-08-25.
Why it did not happen. The Internet Archive holding is access-restricted to the print-disabled collection and cannot be retrieved. Later editions are in print and in copyright.
What is published instead. Cited for general North American context only, alongside an open source, and never for a figure.
The measured scale of traditional orchard loss in the UK, with its survey period and method.
People’s Trust for Endangered Species / Natural England — Traditional Orchard Habitat Inventory and orchard loss surveys. Attempted 2026-08-24.
Why it did not happen. The campaign pages confirm the habitat’s priority status but carry no figure; the numbers are in survey reports that were not retrieved in this pass.
What is published instead. CiderHQ describes traditional orchard decline qualitatively and attaches no percentage to it.
Bulmer’s Pomona (1987) and Beech and Carr (1977), the compilations this page transcribes.
Andrew Lea — Cider Apple Compositional Data. Attempted 2026-08-25.
Why it did not happen. Neither is available in digital form; both are out-of-print printed works. The page is therefore the third hand between the fruit and CiderHQ, and the last one the site can open.
What is published instead. The figures are published as a transcription with the chain named on every measurement, and are never described as primary Long Ashton data.
The printed chapter, its stated methods, and the season the analyses were made in.
AVI / Van Nostrand Reinhold, New York, 1989, edited by Donald L. Downing (ISBN 0-442-22117-7) — Processed Apple Products, chapter on Apple Cider. Attempted 2026-08-25.
Why it did not happen. Out of print and not digitised. The transcriber notes that the method for the tannin column is not given by the book either, and that the data appear to come from a single unnamed season in the late 1970s.
What is published instead. The numeric rows are published as finished-cider measurements under their own properties so they cannot be compared with juice figures, the Brix column is withheld as irreconcilable with the stated substrate, and the Tremlett’s Bitter row is withheld as a documented misidentification.
Any measurement of what pouring from height does to cider — dissolved carbon dioxide, aroma, acidity or foam.
Consejo Regulador DOP Sidra de Asturias — El escanciado, and the official escanciadores’ championship rules. Attempted 2026-08-25.
Why it did not happen. None exists that CiderHQ can find. Searches of the Spanish academic index and of Google Scholar return cultural, historical and art-historical work on escanciado and no measurement of any kind. There is a real Asturian literature on cider foam as a property of the liquid — which polypeptides make a cider foam — and none on the pour. The four institutions that explain the practice give four incompatible mechanisms between them, none with a citation.
What is published instead. CiderHQ publishes the technique, the origin the council itself gives, and the mechanisms as attributed claims with the absence of evidence stated alongside them.
The magazine pages themselves, to attach pp. 830–836 to each quotation by direct reading rather than by citation.
W. D. Haley, Harper’s New Monthly Magazine vol. XLIII, November 1871, pp. 830–836 — Johnny Appleseed: A Pioneer Hero. Attempted 2026-08-25.
Why it did not happen. Harper’s own archive returns HTTP 402 Payment Required for the article, and no scan of Harper’s New Monthly Magazine vol. XLIII was reachable in this environment.
What is published instead. The quotations are published with their wording corroborated across more than twenty independent reprints and no page number claimed. The page range is given as the Harper’s archive gives it.
The chapters themselves, to cite findings to a page.
William Kerrigan, Johns Hopkins University Press, Baltimore, 2012. ISBN 9781421407968. Pp. xiii, 231 — Johnny Appleseed and the American Orchard: A Cultural History. Attempted 2026-08-25.
Why it did not happen. Project MUSE serves the book’s front matter and table of contents openly and the chapters only to subscribers; the Johns Hopkins University Press site returns HTTP 403 to every request.
What is published instead. Findings attributed to Kerrigan on this site are taken from Bremer’s review in the Indiana Magazine of History, which is open access, peer-reviewed and read in full.
The newspaper page, to read the obituary in its own column.
Fort Wayne Sentinel, Fort Wayne, Indiana, 22 March 1845 — Obituary of John Chapman. Attempted 2026-08-25.
Why it did not happen. Chronicling America returned HTTP 503 throughout, and archive.org was unreachable at the network level from this environment.
What is published instead. The text is published as transcribed, with the four independent compilations named and the indirection stated.
The record book, or a page image of it.
Town of Leominster, Massachusetts, entry dated 26 September 1774 — Town record of the birth of John Chapman, Leominster, Massachusetts. Attempted 2026-08-25.
Why it did not happen. No Massachusetts vital-records image service reachable from this environment served the entry, and the town’s own site carries nothing.
What is published instead. The transcription is published with the three concurring works named.
A gap is not an apology. It is the difference between a reference work that knows where its edges are and one that does not, and it is the reason a figure CiderHQ cannot verify is absent from the site rather than present with a hedge in front of it.