Barbecued Sliced Beef

Ingrédients

• 1 1/2 c. chopped onion
• 1 1/2 c. catsup
• 1 Tbsp. dry or 2 Tbsp. prepared mustard
• 1/8 tsp. cloves
• 1 Tbsp. Worcestershire sauce
• 6 hamburger buns
• 2 Tbsp. margarine
• 1/4 c. firmly packed brown sugar
• 1 1/2 tsp. salt
• 1/4 tsp. pepper
• 2 Tbsp. lemon juice or vinegar
• 12 cooked thin slices beef

Instructions