Bbq Hamburger

Ingredients

• 1 lb hamburger, Cooked
• 3/4 onion
• 1 1/2 tablespoons oil
• 5 tablespoons lemon juice
• 2 tablespoons vinegar
• 2 -3 tablespoons brown sugar
• 3/4 cup catsup
• 3 tablespoons Worcestershire sauce
• 1/2 cup celery
• 1 garlic clove
• 1/2 cup water
• 3/4 teaspoon salt
• 1/2 teaspoon prepared mustard
• 4 -6 hamburger buns