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Sensory descriptor

Cooked cabbage

A vegetal sulphur note from dimethyl sulphide, rising slowly during storage rather than during fermentation.

Also called Cabbage water, Boiled vegetable.

Aroma family
Sulphur
Does it indicate a fault?
Usually, yes

What causes it

Dimethyl sulphide is formed by the breakdown of S-methylmethionine and of dimethylsulphoniopropionate, precursors present in plant material, and unlike hydrogen sulphide it accumulates during storage rather than during fermentation. Heat accelerates its formation, which is why heat-treated products and warm-stored ones show it more. Its threshold is around 20 to 30 micrograms per litre in most drinks, and above that it reads as cooked vegetable, cabbage water or, at lower levels and in different company, as a savoury note.

Intensity, not identity, decides this one

Below threshold dimethyl sulphide adds a savoury dimension that is not identifiable as itself. Above it, it is unmistakably cooked vegetable, and because it forms during storage rather than fermentation it can appear in a cider that was sound at bottling.

The compounds responsible

Where the molecule is established. Some descriptors in this lexicon name a compound the compound register does not yet hold a record for; those are named in the cause above instead.

The organisms that make it

Where a specific organism is implicated rather than the fruit. Naming one answers a different question from naming a molecule: what is in the cellar, rather than what is in the glass.

What raises it

Processes that increase this character, or preserve it where it would otherwise be lost.

The fault it points at

Meeting this descriptor above a certain intensity is how the fault below is usually noticed first.

Fault

Reduction

A closed, stale, slightly sulphurous character in cider held under strongly oxygen-free conditions, sometimes clearing with air and sometimes not.

About Cooked cabbage

Cooked cabbage is unusual among the sulphur faults in being a storage phenomenon rather than a fermentation one, and it is therefore a temperature-control question. Cold storage substantially slows its formation.

It travels with the cooked-juice note in heat-abused products, since both are consequences of the same thermal load on the same amino acid pool.

Others in the sulphur family

Rotten egg, struck match, drains, rubber, cooked cabbage.

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Where to go next

Sources

What this page rests on. Where a source is marked as registered rather than read, CiderHQ is recording that the body is authoritative on the subject without claiming to have worked through the document itself. See our evidence policy for what each state means.