Wash, sort and clean the spinach and let it drain. Clean, wash and cut spring onions into rings. Tomatoes wash, clean and halve. Wash herbs, dab dry, chervil finely chop.
Rinse prawns, dab dry, put 3 on each of four shish kebabs. Wrap 4 prawns with some chives. Cook the tender wheat in boiling salted water for about 10 minutes. Heat 1 tablespoon of oil in a pan.
Brown the tomatoes and spring onions in it. Deglaze with broth, add spinach and beans, cover and cook for about 4 minutes. Heat 2 tablespoons of oil in a pan, fry the prawns on each side for about 2 minutes.
Add mustard and milk to the stock. Thicken with sauce thickener. Season sauce with salt, pepper and lemon juice. Drain the wheat and mix with chervil. Arrange prawns and prawn skewers with vegetables and tender wheat.
Garnish with lemon wedges.