Cover the beans and soak them in 1.5 litres of water at room temperature for about 36 hours. Then pour into a sieve and drain well. Peel onion and dice very finely. Peel garlic and chop very finely. Finely puree the beans in 4 portions in a high mixing bowl
Wash parsley, shake dry and chop finely, except for a few leaves for garnishing. Knead beans, onion, garlic, eggs, breadcrumbs, 1 1/2 teaspoon salt and parsley, except for 1 tablespoon for garnishing. Let rest for about 20 minutes
In the meantime clean, clean and halve the mushrooms. Clean and wash spring onions and cut into fine rings. Heat 2-3 tablespoons of oil in a frying pan, add ham and fry while turning, remove. Sauté the mushrooms in the frying fat while turning, add the spring onions, except for 1 tbsp. and fry briefly. Add ham, up to 1/2 tablespoon
Season with salt and pepper, dust with flour, sauté briefly and deglaze with stock. Bring to the boil while stirring, simmer for about 5 minutes. Stir in créme légère and season again with salt and pepper. Keep warm
In the meantime form approx. 12 meatballs from the bean mixture. Heat 2-3 tablespoons of oil in a large frying pan and fry the meatballs on each side over a low to medium heat for 3-4 minutes
Arrange mushroom-ham sauce and meatballs on plates, garnish with parsley leaves and sprinkle with parsley, diced ham and spring onions. Add the rest of the sauce
waiting time approx. 36 hours