Put flour, yeast, salt, sugar and 300 ml of lukewarm water into a bowl and knead into a dough using the dough hooks of the hand mixer. Cover the dough and leave to rise in a warm place for about 40 minutes. Peel and finely dice the onion. Leave bacon in a pan without fat until crisp. Add onion after about 2 minutes. Let bacon and onion cool down. As soon as the dough has risen clearly, knead onions and bacon with your hands on a floured work surface.
Knead the dough for another 5 minutes until smooth, then form into a loaf. Score the surface crosswise with a knife and let it rise again for about 20 minutes. Place the bread on a baking tray lined with baking paper. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 30-40 minutes. The bread must sound hollow when you tap the bottom. Remove bread from the oven and let it cool down for about 30 minutes. Lard tastes good with it
1 1/2 hours waiting time