Clean the radishes and mushrooms, wash and pat dry. Halve the radishes and cut the mushrooms into thin slices. Clean, wash and drain lettuce leaves. In the meantime peel and finely dice the shallot. Mix vinegar, salt, pepper and diced shallot. Whip the oil into it. Pluck lettuce leaves into bite-sized pieces and mix with radishes, mushrooms and vinaigrette.
Peel garlic and cut into slices. Cut baguette into half slices. Heat the fat in a frying pan and fry the baguette and garlic until golden brown. Arrange salad on plates. Cut garden cress from the bed and sprinkle over the salad. Serve immediately with garlic croutons