INGREDIENTS :
1 Tbsp butter
1 tsp olive oil
1 lb. ground beef
1/3 green bell pepper, minced
1/2 large yellow onion, minced
3 cloves garlic, minced
1 Tbsp tomato paste
2/3 cup ketchup
1/3 cup water
1 Tbsp brown sugar
1 tsp yellow mustard
3/4 tsp chili powder
1/2 tsp Worcestershire sauce
1/2 tsp kosher salt
1/4 tsp red pepper flakes (optional)
1/4 tsp black pepper
dash of hot sauce (optional)