What to look for
Check the expiration date and buy packets for occasional baking or a jar for frequent use. Active dry and instant yeast often use different mixing instructions.
Store it thoughtfully
Keep unopened packages as labeled; refrigerate or freeze an opened airtight jar according to the manufacturer. Let condensation stay outside the container.
How to use it
Dissolve it in the recipe’s warm liquid when directed, then watch the dough’s rise rather than relying only on the clock. Warm means comfortable, not steaming hot.
When you need a substitute
Instant yeast can often replace it by weight, but the mixing method and rise time may change. Sourdough starter requires a full formula adjustment.
Substitutions change flavor, texture, and sometimes safety or structure. Check the recipe and product labels, especially for dietary needs.