Wash the meat, dab dry, remove excess fat. Season meat with salt and pepper. Place on the fat pan of the oven or in a flat roasting pan, drizzle with oil.
Cook in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 2 1/2-3 hours. Clean or peel and wash the soup vegetables and cut them into large cubes. Cut leek into rings.
Add soup greens and cinnamon sticks and spread around the roast. After 1 1/2 hours add 400 ml water. Peel and clean the carrots and, depending on size, cut them in half or leave them whole. Wash and clean the mangetouts.
Clean the cauliflower, cut the florets from the stalk and wash them. Heat butter in a pot. Sauté the vegetables briefly while turning. Pour on the stock and stew in a closed pot for about 10 minutes. Season to taste with salt, pepper and sugar.
Meanwhile, cook the rice in boiling salted water according to the instructions on the packet. Remove meat from the fat pan, pour frying mixture through a sieve into a pot and fill up with water to approx. 600 ml, bring to the boil.
Stir the starch and 3 tablespoons of water until smooth. Thicken the sauce. Season to taste with salt, pepper, honey and 1/2 teaspoon turmeric. Remove meat from the bone and cut into cubes. Add to the sauce and heat up.
Arrange rice, meat and vegetables on plates.