1. Food
Send to a Friend via Email
You can opt-out at any time. Please refer to our privacy policy for contact information.

How To Proof Yeast


If your yeast is a little old and you aren't sure if it's still active, here's how to test it before you add other ingredients.
Difficulty: Easy
Time Required: 10 minutes

Here's How:

  1. Combine the yeast with the amount of warm water called for in the recipe.
  2. Stir in about 1/8 teaspoon of sugar.
  3. Check the mixture after about 10 minutes; if it's bubbly, the yeast is good.


  1. Buy yeast in bulk for a big savings. Yeast will keep for years in the freezer.
  2. Use an instant-read thermometer to ensure safe water temperature.

What You Need

  • Yeast
  • Water
  • 1/8 tsp sugar

©2014 About.com. All rights reserved.