Step 1

Heat olive oil in a large pot over medium-high heat. Cook meat until no longer pink.

Step 2

Stir celery and green bell pepper into ground beef for 4-5 minutes.

Step 3

Pour in chopped stewed tomatoes, diced tomatoes with green chiles, tomato sauce, and water. Break apart large chunks of stewed tomatoes. Stir in chili seasoning.

Step 4

Mix kidney beans and pinto beans into chili, season with salt and black pepper, and bring to a boil.

Step 5

Reduce heat to low and simmer for 1 hour. Mix vinegar into chili.