TO SERVE: Light sour cream Finely chopped dill Bring the stock, potatoes, carrots, onion, beetroot, celery, garlic, sugar, salt and pepper to the boil in a large saucepan. Simmer, covered, for 30 to 40 minutes or until the vegetables are cooked. Add the cabbage, tomatoes, dill and parsley. Cook for a further 10 to dozen minutes. Remove from the heat and allow to stand for 10 minutes. Serve in large soup plates with a teaspoon each of sour cream and chopped dill.