Pie dough on dry yeast and water

In a bowl, pour dry yeast and sugar, 100 g of flour, mix the dry products, pour the mixture with warm boiled water, mix and leave in a warm place (near the battery, for example) for 15 minutes.

To the approaching sourdough, add salt, egg beaten with a fork until smooth (you do not need to beat it into a foam) and half of the remaining sifted flour. Knead the dough until smooth, pour in vegetable oil, mix. Add the remaining flour and knead the elastic dough. We put it in a warm place for 1.5 hours. When it fits, we crush it with a wooden spoon or a spatula and let it rise again. The dough is ready for baking.