How to Test the Freshness of Yeast

Yeast is a living entity that comes to life with the addition of sugar and proofing. Yet, yeast that has been stored too long loses its freshness and eventually, the yeast dies and cannot be revived. If you're not sure how long that yeast has been in the pantry for, test its viability.

Steps

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    Remove one sachet of the yeast from the packet, or a teaspoon of loose yeast from a container.
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    Pour a 1/4 cup of warm water into a small bowl.
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    Add the yeast.
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    Add 2 teaspoons of flour.
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    Cover the bowl. Leave the yeast to proof in a warm place.
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    Check once the 15 minutes has passed. Live yeast will cause the surface to bubble and this means the yeast is good and will work in your baking. On the other hand, if there is no sign of activity after 15 minutes have passed, the yeast is no good and should be discarded.

Tips

  • Try to keep an eye on the dates of baking ingredients such as yeast and bring them forward in their storage space so that items that expire within short time frames catch your eye easily.
  • Another method is to use a teaspoon of granulated sugar instead of the flour.[1]

Things You'll Need

  • Small bowl
  • Teaspoon
  • Cover for bowl (lid, clean tea towel, etc.)

Sources and Citations

  • Tess Mallos, The Complete Middle East Cookbook, p. 15, (2006), ISBN 1-7411-0231-6 – research source

Article Info

Categories: Alcoholic Drinks | Baking