Knead a shortcrust pastry from the specified ingredients and refrigerate.
Peel the onions and cut into fine rings, cut the bacon into cubes. Heat the oil in a large pan, fry the bacon and onion rings in it over a medium heat for approx. 5 minutes, stirring frequently and finally add the caraway seeds.
Let the onion and bacon mixture cool down a little (can be prepared well).
Preheat the oven to 200 °, line the springform pan with baking paper.
Roll out the dough on a floured work surface, place in the mold, forming an approx. 4 cm high edge. Spread the bacon and onion mixture on the dough.
Whisk eggs with cream and milk, season with salt, pepper and nutmeg and pour over.
Bake the quiche in the oven at 200 ° (convection 180 °) for 40-50 minutes until golden brown.