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The chief sensory effect of malolactic fermentation is that the wine becomes

  • A.Stronger, because a considerable amount of alcohol is formed
  • B.Softer, because a sharper acid is replaced by a milder one
  • C.Sharper, because a milder acid is replaced by a stronger one
  • D.Sweeter, because sugar is released from the grape skins

Answer: B

Malic acid tastes markedly sharper than lactic acid, so converting one to the other softens the wine and gives a rounder mouthfeel. Diacetyl produced alongside can add a buttery note. No alcohol or sugar is generated by the step.

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