Peel and chop the kohlrabi and carrots. Cook in boiling broth for 10 minutes. In the meantime, boil 1/8 litre of water with a pinch of salt and fat. Stir in semolina and let it cool down a bit.
Wash parsley, dab dry and chop. Knead the parsley and egg into the semolina. Form small dumplings from the mixture. Clean and wash spring onions and cut into rings. Add the dumplings, peas and spring onions to the soup and cook for 10 minutes on a low heat.
Season soup with salt and pepper.