Royal Roast Beef
["4 lb. roast, eye of round, sirloin tip, rum", "2 Tbsp. butter", "2 Tbsp. oil", "1 c. onion, finely chopped", "3 Tbsp. flour", "1 Tbsp. dark Karo syrup", "2 Tbsp. white vinegar", "2 c. beef stock or 2 beef bouillon cubes", "1 bay leaf", "salt and pepper to taste"]
["Brown roast in butter and oil. Remove roast and brown onions. Remove pan from heat and add flour, stirring until blended."]
["rum", "butter", "oil", "onion", "flour", "syrup", "white vinegar", "beef stock", "bay leaf", "salt"]