Clean, peel and wash the kohlrabi, carrots and potatoes (put the tender kohlrabi leaves aside). Cut the vegetables into bite-sized pieces. Boil up the chicken stock. Cook the prepared vegetables for about 12 minutes.
Cut the sausages into slices. Wash and chop parsley. Add peas to the stew. Bring to the boil briefly. Add the sausages and season to taste with salt and pepper. Sprinkle with parsley and serve garnished with kohlrabi leaves.