Wash the whole asparagus. Peel the white asparagus and cut the woody ends off the whole asparagus. Cut the asparagus into thin, diagonal slices. Peel and finely chop the onion. Clean, wash and slice the radishes. Wash and halve the tomatoes.
For the marinade, mix vinegar, salt, pepper and 1 pinch of sugar. Fold in the oil. Mix with the prepared ingredients and leave to stand for about 30 minutes.
Wash the cress, shake dry and cut from the bed. Season salad and arrange with cress. Fresh baguette tastes good with it.