go to their web site yeast is listed as an ingredient .
The reference to yeast in the list of ingredients (Ingredients: “Type 00” wheat flour, San Marzano non-concentrate tomato sauce, cow-milk mozzarella from Agerola, seed oil, water, yeast, marine salt, basil, oregano and garlic
) does not rule out the use of natural yeast, as in a Crisceto.
Also, if you look under the La Storia
tab, you will see this sentence: The secret of Da Michele’s enduring success is in the use of natural ingredients, and of an old, traditional, time-tested method of leavening pizza dough
. To me, that doesn't sound like they are trying to attach such high praise and honor to fresh yeast or any other form of commercial yeast.