Which of the following is NOT a factor influencing yeast fermentation in dough?

• A. Pan color
• B. Temperature
• C. Time
• D. Available fermentable sugars

Answer: (A)

Yeast fermentation in dough is driven by the yeast’s ability to metabolize available sugars under the right conditions. Temperature controls activity: within the proper range, fermentation proceeds steadily; too cold slows it, too hot can kill or weaken the yeast. Time determines how long the dough ferments, which affects gas production and dough rise. Available fermentable sugars provide the fuel for the yeast; if sugars are limited or not accessible, fermentation slows or stalls. Pan color doesn’t influence the dough’s fermentation because it doesn’t change the environment inside the dough where the yeast lives. Pan color matters during baking for heat absorption and crust development, not for fermentation.