The Forktionary Angle
"The living engine of fermentation and rising."
Definition
A single-celled fungus essential for leavening bread and fermenting alcohol, converting sugars into carbon dioxide and ethanol.
Technical Metrics
CO2 Production
Yeast can produce up to 2.5 times its weight in carbon dioxide under optimal conditions.
Optimal Activation Temp
105-115°F (40-46°C) for active dry yeast.
Storage Tip
Store opened yeast packets in the freezer for up to 6 months for best activity.
Chef’s Secret
"Proof" your yeast with a pinch of sugar in warm water. If it doesn't bubble and foam within 5-10 minutes, it's likely inactive.
Buying Guide
Check "use by" date. Store in a cool, dry place; refrigerate after opening.