Rinse the meat and pat dry, fry in clarified butter, season and keep warm.
Cut the bread into small pieces. Peel and finely chop the garlic. Roast both in the frying fat and set aside.
Wash the lemon, rub the peel and squeeze out the juice. Mix the grated zest and the juice with salt, pepper and sugar and fold in the olive oil.
Rinse, clean, spin dry the lettuce and pick it up. Wash and halve the tomatoes. Rub the mushrooms and cut into thin slices. Divide everything on 4 plates, drizzle with the dressing and sprinkle with croutons.
Cut the meat into beautiful slices and serve on the salad.