Yeast Conversion Chart Artisan Ingredients Discuss Yeast Conversion Chart in the Pizza Quest with Peter Reinhart forums; I have some recipes that call for "fresh yeast" which I can't find nearby . So I went looking for ...

[chuckster]

I have some recipes that call for "fresh yeast" which I can't find nearby . So I went looking for a conversion to dried yeast and found this chart. Maybe someone else will find it useful.
Chuck

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YEAST MATH-EQUIVALENTS & CONVERSIONS

The following conversions make it possible to substitute one form of yeast for another.

1 envelope dry yeast = 2 ½ t. by volume
1 envelope dry yeast = ¼ ounce by weight
1 envelope dry yeast = 2/3 ounce compressed yeast in rising power

Therefore, 2 ½ teaspoons or ¼ ounce dry yeast is equal to 2/3 ounce compressed yeast.

1 ½ envelopes dry yeast = about 1 tablespoon plus 1 teaspoon by volume
1 ½ envelopes dry yeast = 3/8 ounce by weight
1 ½ envelopes dry yeast = 1 ounce compressed yeast in rising power

Therefore, 1 tablespoon plus 1 teaspoon or 3/8 ounce dry yeast is equal to 1 ounce
compressed yeast.

1. Multiply envelopes of dry yeast by 2/3 to determine ounces of compressed yeast.

2. Multiply ounces of dry yeast by 8/3 to determine ounces of compressed yeast.

3. Multiply ounces of compressed yeast by 3/8 to determine ounces of dry yeast.

4. Multiply ounces of compressed yeast by 3/2 to determine number of envelopes of dry yeast.

[dmun]

This table is presumably for active dry yeast (ady) rather than instant dry yeast (idy) which is somewhat more active, and requires less quantity.