-mix in a bowl the yeast with a tablespoon of flour, three tablespoons of warm water and a little sugar, until you get a homogeneous paste. Cover it and let it rise until it swells and doubles in volume. and in the middle of it we make a hole where we pour the mixture of yeast, oil, water and salt. Knead until it becomes an elastic dough, then let it grow until it swells a little. .
-Cut the salami, ham and kaizer into thin slices. Boil the mushrooms for about 15 minutes in salted water, then let them drain. Grate the cheese.
Put 3 tablespoons of tomato paste over the pizza top, then put the salami, ham, kaizer, cheese and mushrooms. Bake over medium heat until the top is lightly browned on top.