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wrote:
> You didn't mention this so I'm not sure if you did it. But did you
> rehydrate the yeast in warm water before you added it to the must? It
> is necessary in order to "wake" up the yeast and let them know they
> need to start doing their stuff. If you add it to the must dry then it
> doesn't "shock" them enough to get active because the sugar hinders it.
> They need water and oxygen to get going.

You don't need to rehydrate the yeast - for example, kit instructions
always say to just sprinkle on top. Yeast works better when properly
rehydrated but it's designed to work okay even if it's used dry.
Rehydration has some aded risks in that you have to watch the temp
difference between the rehydrated yeast and the must.

Pp