Stir bulgur into the boiling vegetable stock, simmer for 3 minutes and then cover and let it soak for about 15 to 20 minutes.
Dice the onion, peel the carrots and grate finely. Clean and finely chop the mushrooms. Steam the vegetables for about 5 minutes and mix with the bulgur.
Let the mixture cool down. Mix in the eggs and flour. Season with salt and pepper vigorously. Shape the mixture into patties and fry them on both sides in a pan with hot fat.