My version of Milwaukee Real Chili

This recipe is dead simple, but is delicious every time!
| Ingredient | Amount |
|---|---|
| Ground beef | 1¼ lbs |
| Finely chopped fresh onion | ¼ cup |
| Crushed tomatoes | 28 oz |
| Diced tomatoes | 15 oz |
| Chili powder | 2 tbsp |
| Balsamic vinegar | 1/4 cup |
| Salt | 1 tsp |
| Allspice | 1/2 tsp |
| Ground cayenne pepper | 1/2 tsp |
| Cumin | 1 tsp |
| Worcestershire sauce | 1 tbsp |