Cheesy WorcesterSON Burger - Sutter Home Family Vineyards

Ingredients

• 2 tablespoons Worcestershire sauce
• 2 tablespoons seasoning salt
• 1 tablespoon pepper
• 5 lbs. lean ground beef
• 1 lb ground pork
• 8 oz shredded mozzarella cheese
• 1 pack onion soup mix
• 1 egg
• 1 8 oz. sweet and sour sauce
• 8 onions, sliced
• 8 tomatoes, sliced
• romaine lettuce leaves