Does Freezing Yeast Ruin It?
Freezing yeast can extend its shelf life and keep it fresh for longer periods, but it does not ruin it if done correctly. However, precautions must be taken when freezing yeast to ensure that it remains active after thawing. Yeast must be packaged properly and stored at the appropriate temperature to avoid damaging the cells. Once thawed, the yeast should be used immediately and not refrozen.