Peel and chop 2 onions. Heat the olive oil. Sauté onions and rice. Add chopped tomatoes and 1/8 litre water. Season with salt, pepper and paprika. Cover and cook for about 30 minutes.
In the meantime, wash the basil and, except for a few leaves for garnishing, cut into fine strips. Add to the risotto during the last 5 minutes. Wash and dice the meat. Peel and quarter the remaining onions.
Put the meat cubes and onion quarters alternately on skewers. Heat the oil in a large pan. Fry the skewers for about 10 minutes, turning occasionally. Season with salt and pepper. Then take them aside.
Stir the ketchup and sambal Oelek into the frying fat. Bring to the boil briefly. Season to taste again. Arrange risotto, skewers and sauce garnished with basil on plates.