Prepare rice in boiling salted water according to package instructions. Peel, wash and cut the kohlrabi into sticks. Wash the asparagus, cut off the lower woody ends. Cut the asparagus into pieces.
Cook the kohlrabi and asparagus in boiling salted water for about 10 minutes. Cook the eggs in boiling water for 8 minutes. Pour vegetables onto a sieve, collect the vegetable water and measure 3/8 litres. Keep vegetables warm.
Boil up the vegetable water. Stir in crème légère and mustard. Bind with sauce thickener. Season with salt and pepper. Wash the chervil, put something aside for garnishing. Chop the rest coarsely and stir into the sauce.
Drain eggs, quench, peel and slice. Drain rice on a sieve. Arrange rice, ragout and eggs on plates. Pour sauce over them and sprinkle with pink berries. Garnish with chervil.