"A delicious and hearty chili con carne that is also easy to make. The small addition of brown sugar and touch of vinegar in combination with the chili powder gives the soup an enticing flavor trio. Add more or less to suit your individual tastes. Offer cornbread like my Mom did and you have a tasty, tempting meal."
Heat oil in a stockpot over medium heat. Add onions and garlic; cook and stir until tender, about 5 minutes. Add ground beef; cook and stir until browned and crumbly, 5 to 7 minutes. Mix in tomatoes, navy beans, chili beans, black beans, green bell pepper, celery, brown sugar, vinegar, chili powder, and salt. Bring to a boil. Reduce heat to medium-low and let simmer until thick, at least 1 hour.