Combine the tomatoes, tomato puree, carrots, onion, celery, garlic, parsley and lemon rind in a heavy saucepan.
Step2
Simmer for one hour, watching carefully, and stirring often.
Step3
Remove mixture from the heat and press through a sieve. Add salt and pepper to taste and return to heat, simmering until thickened. Sprinkle gradually with Hot Sauce, tasting often. Stir in the butter and serve. Enjoy!