The Forktionary Angle
"Unlike instant yeast, active dry yeast requires "proofing" in warm liquid to ensure it's alive and ready to work, a crucial step for successful bread baking."
Definition
A living microorganism, a single-celled fungus, sold in granular form, that ferments sugars in dough to produce carbon dioxide, causing bread to rise.
Technical Metrics
Fermentation Product
Carbon Dioxide (CO2) & Ethanol
Optimal Activation Temperature
105-115°F (40-46°C)
Shelf Life (Unopened)
1-2 years (refrigerated)
Chef’s Secret
If your active dry yeast doesn't foam and bloom within 5-10 minutes of proofing, it's dead. Don't waste your flour; discard and get new yeast.
Buying Guide
Check expiration dates. Store unopened packages in a cool, dry place or refrigerator; once opened, store airtight in the fridge or freezer.