Peel onion and garlic. Quarter the onion. Wash the meat. Boil 1 l water with meat, onion, 5 garlic cloves and 1 tsp salt. Simmer everything over a low heat for 50-60 minutes
Clean, wash, seed and dice the tomatoes. Clean and wash spring onions and cut them into rings. Cut 2 cloves of garlic into slices. Peel and wash potatoes
Remove meat from the broth. Grate the potatoes finely in the stock and simmer for another 10-15 minutes
Roast garlic slices in 1 tablespoon of hot fat, remove. Sauté the spring onions and tomatoes briefly. Season and take out. Heat 2 tablespoons of fat in the frying fat. Roast bread in it
Puree the soup and season to taste. Whisk the egg yolk and cream, stir into the soup and thicken over medium heat (do not boil any more!). Heat tomatoes and spring onions in it. Serve with bread and garlic slices