Mix the yeast with milk and one third of the flour to form a mixture.
When the mixture has risen, add all the other dough ingredients and knead into a smooth dough until it comes away from the edge of the bowl.
Let dough rise briefly, fold and roll out very thinly on a greased baking sheet and flatten a little.
Brush the dough with oil and evenly spread the cooked tomato sauce made with peeled tomatoes, garlic, oil and spices.
Top with chopped ham and vegetables and mushrooms.
Finally, spread half the tomato slices and the salami on top and sprinkle with a little oregano.
Coarsely grated Emmental cheese rounds off the topping.
Bake the pizza at 180 °C in the preheated oven for about 25-30 minutes.