Wash the asparagus and cut off the woody ends. Cut the asparagus into pieces. Peel and wash kohlrabi and cut into thin slices. Peel and finely chop the onion.
Heat 2 tablespoons of oil and sauté the onion. Add kohlrabi. Season with salt and pepper. Add 200 ml water. Bring to the boil, cover and stew for about 4 minutes. Add asparagus. Steam everything for about 3 minutes more.
Finally add frozen peas, bring to the boil and remove from the heat. Pour the vegetables into a large bowl with the cooking water.
Wash the chervil, pluck the leaves. Wash organic lemon hot and dab dry. Grate the peel. Squeeze both lemons. Mix lemon peel and juice, chervil and 3 tbsp. oil and mix with the vegetables.
Season to taste. Clean, wash and tear salad into pieces. Grate cheese. Before serving mix in parmesan and salad leaves.