Season vinegar with salt and pepper. Marinate the fillet of beef in it. Peel and halve the shallots. Dice 1/2 shallot finely. Boil up 200 ml stock. Add rice and diced shallot and cook for about 20 minutes, stirring occasionally.
Meanwhile clean, wash, dry grate and halve the tomatoes. Clean and clean the mushrooms and cut them into fine slices. Heat the oil in a pan. Remove beef fillet from the marinade and fry on both sides for 2-3 minutes. Remove and wrap in foil. First briefly sauté the mushrooms in the frying fat. Take them out. Add shallots and tomatoes to the cooking fat and fry for approx. 5 minutes. Deglaze with marinade and 50 ml broth. Bring to the boil and simmer for 2-3 minutes. Add mushrooms to the risotto and season with pepper. Serve the risotto, tomato-shallots-vegetables and beef fillet together.
Add shallots and tomatoes to the cooking fat and fry for approx. 5 minutes. Deglaze with marinade and 50 ml broth. Bring to the boil and simmer for 2-3 minutes. Add mushrooms to the risotto and season with pepper. Serve the risotto, tomato-shallots-vegetables and beef fillet together. Season the balsamic jus with a dash of sweetener if necessary and drizzle over it. Wash the basil and shake dry. Serve garnished with basil