English translation: potassium acid trartrate (bitartrate)
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Italian to English translations [PRO] Tech/Engineering / food science
Italian term or phrase:cremortartaro
Ingredient used in chemical raising agents in the baking and food industry along with sodium and ammonium carbonates (very likely to be tartaric acid). But I'm not sure of the exact translation in this case.
Explanation: Refrigerazione: abbassando la temperatura del vino si accelera il processo di deposito dei sali dell'acido tartarico, in particolare del tartrato acido di potassio(cremortartaro). Inoltre le particelle che si depositano trascinano con sé I Lieviti é i batteri resi inattivi dal freddo.
I'm reluctant to use cream of tartar (which I agree is probably the most common way of saying it) since the other components of the raisng agent are given using their correct chemical names (sodium and ammonium bicarbonate).