Can yogurt be used as a substitute for yeast in pizza dough

From what I can find, it contains 'dough relaxers' so you can shape the dough without it springing back. It also claims you don't need to let it rise, but it then tells you to bake your pizza for 30 minutes! So it essentially rises in the oven.

Compare this to 'proper' dough which you let rise for a couple of hours, pull into shape and then bake in a screaming hot oven for 5 minutes tops. It strikes me that using pizza yeast is 'pizza for dummies'; claiming 'it stops it rising too much' is nonsense because if the amount of yeast is correct in your recipe you control the rise anyway.

So it depends on whether you like doing things easy or doing things right. You can bet your pepperoni slices they don't use 'pizza yeast' in Naples. Personally I cheat just a little and use dried fast-action yeast as it has a longer shelf-life and you don't fuss around proving it, and my pizzas come out great.

In both cases, you don't add the recipe's amount of water to the proofed yeast. If your recipe says e.g. 500 g flour, 300 g water and 10 g fresh yeast, you measure these 300 ml water, then pour some of the 300 ml over 10 g of pressed yeast to proof it, adding a teaspoon of sugar if you want it quicker. After that, you mix flour, proofed yeast and the remaining water together (for simplicity, I left out salt and possible other ingredients).

You do it exactly the same way with dry yeast, only you have to use the correct substitute ratio, which is 3:1. So you measure 300 ml of water and (1/3)*10 g = 3.3 g of dry yeast. Then you pour some of the 300 g of water over the dry yeast, and after it has bloomed, you mix flour, sponge and the remaining water. The bread hydration stays correct, and the fermentation time/amount is equivalent to the fresh yeast case.