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Which measurement would a brewer use to follow the progress of a fermentation?

  • A.The colour of the malt used in the grist
  • B.The bitterness contributed by the hops
  • C.The temperature reached during kilning
  • D.The falling specific gravity of the beer

Answer: D

As sugar is converted to alcohol the liquid becomes less dense, so gravity readings taken over time show how far fermentation has gone and when it has finished. Colour, bitterness and kilning are all fixed before the yeast is pitched.

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