How to Activate Yeast for Baking

Step 1

Choose a recipe you’d like to make that requires activating yeast. The recipe should specify the amount of water needed to activate yeast. (Usually, this is approximately 1/4 cup). Place the appropriate amount of water into the measuring cup and heat in the microwave for a 10-15 seconds if needed. The water should be warmer than lukewarm but not hot. Aim for 110-115 degrees (think warm milk or a warm baby’s bottle).

Step 2

Next, check the expiration date on the yeast to ensure it isn’t expired. Add the specified amount of yeast to the water. Add 1 teaspoon of honey or sugar to the water and yeast. Stir the mixture to combine.

Step 3

Let the mixture sit, undisturbed, for about 10 minutes. The mixture should begin to look tan, foamy, and frothy on the top. If you started with 1/4 cup of water, the end result should be close to 1/2 of liquid including the foam.

Step 4

After the yeast activates, follow the recipe as written.