Mama'S Baked Beans
["4 Tbsp. bacon grease", "1 large chopped onion", "1 large (16 oz. or larger) can pork and beans (if using 31 oz. double the recipe)", "1/2 c. packed brown sugar", "1/2 c. ketchup", "1 Tbsp. vinegar"]
["Combine ingredients, adding pork and beans last.", "Cook on medium heat for 30 minutes, stirring so mixture will not scorch. Pour into a baking dish and bake, uncovered, in a 350\u00b0 oven for 30 additional minutes.", "For added flavor, put 1 inch strips of bacon on top before baking."]
["bacon grease", "onion", "pork", "brown sugar", "ketchup", "vinegar"]