Ferrocyanide: nm Potassium ferrocyanide is used as a stabilizer to prevent ferric and copper casse in white and rosé wines. This treatment, given its toxicity and the difficulties of use, is only useful as a last resort, when it is no longer possible to treat otherwise. Its use is subject to a prior declaration to the Repression of Fraud with record keeping, under the control of an oenologist. Once the treatment is complete, the oenologist must...
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