Onions peel and roughly chop. Clean the leek, wash thoroughly and cut into rings. Dab meat dry and chop finely.
Heat the lard little by little in a casserole. Brown the meat all around in portions. Fry the last portion of onions and leek. Add all the meat again. Season with salt and pepper.
Add the tomatoes, juice and 1 l water. Chop the tomatoes with a spatula. Bring to the boil and stir in the stock. Season with approx. 1 tsp. chilli and cover and braise for approx. 1 1⁄2 hours until the meat falls apart easily.
Rinse the whole beans in a sieve and drain well. Add to the stew and heat. Break the chocolate into pieces, stir in and let it melt. Season to taste with salt, pepper and chilli.
Roasted farmhouse bread with herb cream cheese tastes good with it.