Best Homemade Chili
["4 lb. ground beef", "2 large onions", "4 tsp. chili powder", "red pepper flakes to taste", "2 tsp. oregano", "2 tsp. cumin", "2 tsp. paprika", "3 tsp. garlic powder", "2 cans (one 15 oz. and one 29 oz.) tomato sauce", "3 Tbsp. all-purpose flour", "2 Tbsp. vinegar"]
["In a large Dutch oven or soup kettle, brown beef with onions; drain. Stir in spices and tomato sauce. Simmer, uncovered, for 1 hour, stirring occasionally. Combine flour and vinegar. Stir into chili. Simmer another 15 minutes or until thickened."]
["ground beef", "onions", "chili powder", "red pepper", "oregano", "cumin", "paprika", "garlic powder", "tomato sauce", "flour", "vinegar"]