Asian-Style Pork Burgers with Barbecue Sauce | RICARDO

Ingredients

• 1/2 onion, finely chopped
• 1 tablespoon (15 ml) vegetable oil
• 1/4 cup (60 ml) hoisin sauce
• 1/4 cup (60 ml) ketchup
• 2 tablespoons (30 ml) soy sauce
• 1 tablespoon (15 ml) oyster sauce
• 1 tablespoon (15 ml) sugar
• Salt
• pepper
• 1 1/2 cups (375 ml) bean sprouts
• 2 tablespoons (30 ml) vegetable oil
• 1 tablespoon (15 ml) soy sauce
• 1 tablespoon (15 ml) hoisin sauce
• 1 lb (454 g) lean ground pork
• 4 Boston lettuce leaves
• 4 hamburger buns