Three Alarm Chili recipe

1 No. 10 can tomato puree
1 No. 10 can canned crushed tomatoes
6 pounds ground round
2 cups onion -- minced
1 cup hot chile powder
1/4 cup dried oregano
1 No. 10 can canned kidney beans -- drained
2 teaspoons kosher salt -- to taste
2 tablespoons pepper -- to taste
2 cups cheddar cheese -- grated
8 ounces sour cream
4 cups sweet onion -- minced

Combine beef and onions in a stockpot, over a moderate flame. Heat and stir for 15-20 minutes, until browned. Stir in remaining ingredients. Bring to a boil, reduce heat, and simmer for 2 hours. Serve hot, garnished with grated cheddar cheese, sour cream, and minced sweet onions.