By Marge Perry
Updated May 17, 2012
Credit: Photo by Lee Harrelson; Styled by Jan Gautro

Compressed yeast and dry yeast can be used interchangeably in baking. Use one package, which is about 2 1/4 teaspoons, of active dry yeast for 1 (0.6-ounce) cake of compressed yeast.

Compressed, or fresh, yeast may be softened in liquid or crumbled directly into the dry ingredients, according to recipe directions. Dry yeast is generally dissolved in warm water prior to use. Again, though, be sure to follow recipe directions.