Our local baker was kind enough to give us some fresh yeast. How much should we use for this recipe?

Hi Glen! The Genius pizza recipe calls for 1/2 teaspoon (or about 1 1/2 grams) active dry or instant yeast. You can estimate anywhere from a 2:1 to 3:1 ratio for substituting here—so, you'd double or triple the weight of active dry or instant yeast to get the needed weight of fresh yeast. In this case that would be 3 to 4 1/2 grams.