Peel the onion and garlic cloves. Finely chop the onion, press the garlic.
Melt 1 tablespoon of the crackling lard in a saucepan, sweat the onion and garlic in it. Pour in the vegetable stock and heat it up. Add the remaining crackling lard, season with caraway seeds, pepper, marjoram and salt and let the soup simmer for a few minutes.
While the soup is simmering, the bread is cut into small cubes and fried in butter in a pan.