1. Peel and wash the vegetables.
2. Blanch the cabbage in boiling salted water for 5 minutes. Drain and set aside.
3. Bring a large pot of water to a boil. Once boiling, reduce to a simmer. Add the bouquet garni, black peppercorns, and coarse salt. Add the sliced smoked bacon.
4. Cook the broth over low heat for 15 minutes, skimming occasionally.
5. Remove the bouquet garni using a slotted spoon.
6. Add the turnip, celery, onion (cut in half and studded with cloves), carrots (cut into 5 cm pieces), leeks, and cabbage.
7. Cook over low heat for 45 minutes. Then add the potatoes and pre-pierced sausages. Continue cooking for another 30 minutes over low heat.
8. Drain the vegetables and place them in a serving dish. Arrange the bacon and sausages, cut into pieces, on top of the dish.
9. Serve immediately.