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How to Test Baking Yeast To See If it Is Good

by
author image Ingrid Smith
Ingrid Smith started her medical research in 1993 and had her first contribution to medical writing in 1996 for "The New England Journal of Medicine." She holds a Bachelor of Arts in international relations from Stanford University and a medical degree from New York University School of Medicine.
How to Test Baking Yeast To See If it Is Good
Test yeast before baking with it to ensure that it is active. Photo Credit Yeast dough image by Elzbieta Sekowska from <a href='http://www.fotolia.com'>Fotolia.com</a>

Yeast is a living organism and baker's yeast is the species of yeast used in baking to leaven baked goods. Dry baker's yeast is granules of dormant yeast. Before using this yeast, bakers will often test it to make sure that it is still viable. The process of testing yeast to see if is still fresh and active is known as proofing and can be done in a few simple steps.

Step 1

Check the expiration date on the package of yeast to ensure that it has not expired.

Step 2

Pour 1/2 cup of warm water into a small bowl or cup. The water should be between 110 and 115 degrees Farenheit.

Step 3

Dissolve 1 tsp sugar into the warm water.

Step 4

Add 2 1/4 tsp yeast and stir until thoroughly dissolved.

Step 5

Allow to sit 5 minutes.

Step 6

Check to see if the yeast mixture is foamy and bubbly. If so, the yeast is active.

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