Pour the flour into a bowl and make a depression in the middle. Dissolve the yeast and 1 pinch of sugar in 250 ml of lukewarm water, pour into the hollow. Mix with some flour from the edge to a pre-dough. Cover and leave to rise in a warm place for about 30 minutes.
Add 1/2 tsp salt and 2 tbsp oil to the pre-dough and knead everything for 5-10 minutes to a smooth dough. Form into 4 balls and let them rise covered for about 30 minutes.
Peel and chop the onion and garlic. Heat 1 tablespoon of oil in a saucepan. Fry the onion and garlic for about 5 minutes while stirring. Add the tomatoes and chop with a spatula.
Bring to the boil and simmer at low heat for 30-40 minutes, stirring occasionally (be careful, it splashes!). Season with dried herbs, season to taste with salt, pepper and sugar.
Wash the basil, shake dry, pluck the leaves. Roll out dough balls on a floured work surface until round (approx. 22 cm Ø). Place 2 shelves on a baking tray covered with baking paper. Spread with tomato sauce.
Spread the cheese with a spoon. Spread basil leaves on top, except for some for garnishing. Bake the pizzas in the preheated oven (electric cooker: 250 °C/ convection oven: 225 °C/ gas: level 5) one after the other for about 13 minutes.
Garnish with basil.