Pittsburgh Ham Barbecues

Details

Ingredients

• ½ cup butter
• 1 small onion, finely chopped
• 2 cups ketchup
• ⅓ cup distilled white vinegar
• ½ cup water
• 3 tablespoons brown sugar
• 2 teaspoons prepared yellow mustard
• 2 tablespoons Worcestershire sauce
• 1 ½ pounds chipped chopped ham
• 8 kaiser rolls, split
• 1 cup pickle relish