For the pizza dough, dissolve fresh yeast in 50 ml lukewarm water. Stir in 1 large pinch of sugar. Put 300 g flour in a bowl and make a depression in the middle. Pour in the yeast water. Mix with some flour from the edge to a pre-dough.
Cover and leave to rise in a warm place for about 15 minutes.
For the topping, peel and finely dice the onion and garlic. Heat 2 tablespoons of oil. Stir-fry the minced meat for 5-8 minutes until finely crumbly. Fry onion and garlic for 2-3 minutes. Stir in tomato paste and sweat it on.
Add the tomatoes. Season with salt, pepper and sugar. Simmer for about 15 minutes. Season tomato mince mixture again. Let cool down a little bit.
Add approx. 100 ml lukewarm water, 1⁄2 TL salt and 1 tbsp oil to the pre-dough and knead everything with the dough hooks of the mixer to a smooth dough. Cover the dough and let it rise for about 30 minutes.
In the meantime grate the Parmesan finely. Finely dice the mozzarella. Mix cheese. Cut pepperoni into wide slices. Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Grease a springform pan (approx. 26 cm Ø) and dust with flour.
Knead the dough once again on a floured work surface and roll out round (approx. 30 cm Ø). Place in the form and press the rim. Sprinkle the base with approx. 1⁄3 cheese. Spread the minced meat mixture on top, add the pepperoni.
Sprinkle with remaining cheese and bake in a hot oven for 30-35 minutes. Remove and let rest for about 5 minutes before cutting.