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The usual method of controlling Brettanomyces in winemaking is

  • A.Addition of sulphur dioxide to must and wine
  • B.Raising the fermentation temperature sharply
  • C.Adding extra sugar late in the fermentation
  • D.Leaving the wine in contact with the air

Answer: A

Sulphur dioxide is the standard control, though strains differ in their sensitivity to it, which is why cellar hygiene and careful topping-up of barrels matter as well. Warmth, residual sugar and oxygen all favour the organism rather than hindering it.

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