Soak rolls in cold water. Peel onion and garlic. Finely dice both. Knead with minced meat, squeezed roll and egg. Season with salt and pepper. Shape into small balls
Rinse the fillets if necessary, dab dry and cut into large cubes. Clean, wash and pat dry the vegetables and mushrooms. Cut cauliflower into florets, zucchini into slices. Halve mushrooms if necessary
Arrange meat and vegetables on plates. Heat fat or oil in a fondue pot on the stove. Place on the chef's plate. Fry meat for about 5 minutes and vegetables for 2-4 minutes at the table.