Peel, wash and quarter the carrots. Wash and halve 2 onions. Put both with shovels and spices in a large pot and cover with 4-5 l cold water. Bring everything to the boil, cover and simmer for about 2 1/2 hours.
Wash the potatoes and cook covered in water for about 20 minutes. Peel and finely dice 1 onion. Wash the chives and cut into small rolls. Drain potatoes, rinse with cold water, peel and slice hot.
Approx. 300 ml Schäufele broth, 8 tbsp vinegar, 1 tbsp sugar, onion, 1 tsp salt and some pepper in a small pot briefly boil up. Add 6 tablespoons of oil. Mix hot marinade and chives into the potatoes.
Leave to soak for 3/4-1 hour. Peel 1 onion and chop finely. Mix 4 tablespoons vinegar, onion, mustard, some salt and pepper. Fold in 6 tbsp. oil. Clean, wash and drain the endive salad.
Pluck the salad into bite-sized pieces and mix with the vinaigrette just before serving. Season the potato salad with salt and pepper again, if necessary add some vinegar and hot stock.
Lift the shovels out of the broth and remove them from the bone. Cut the meat into slices and serve with the warm potato salad. Serve with endive salad.