Wash the potatoes and cook in boiling water for 20 minutes. In the meantime clean and quarter the red cabbage. Remove the stalk and cut the cabbage into fine strips. Wash the cabbage and drain well.
Peel and halve an onion, also cut into strips. Heat the lard. Fry the onion and red cabbage for ten minutes, turning them over. Season with salt, peppercorns, cloves, laurel and juniper.
Add vinegar and 200 millilitres of water. Cover and stew for 30 minutes. Drain potatoes, rinse with cold water, peel and press through a potato ricer. Peel the rest of the onion, dice finely and sauté in a tablespoon of hot fat until transparent.
Pluck the thyme leaves from the stalks. Separate eggs. Knead potatoes, egg yolk and starch. Add onion cubes and thyme. Season with salt. Form eight large dumplings from the potato mixture. Turn the dumplings first in the egg white, then in semolina.
Heat the remaining fat and fry the dumplings in it until golden brown all around. Arrange red cabbage and dumplings on plates and garnish with laurel and thyme as desired.