Double Cheeseburgers - Alex Guarnaschelli | Iron Chef and Food Network Celebrity

Ingredients

• 3 large red onions, cut into ½-inch rounds
• 6 tablespoons Canola oil
• Kosher salt
• 1 tablespoon light brown sugar
• 1 tablespoon red wine vinegar
• 1/3-cup ketchup
• 2 tablespoons mayonnaise
• 2 teaspoons hot sauce
• 1 teaspoon coarsely ground black pepper
• 11/2 pounds hamburger meat
• 2 tablespoons low sodium soy sauce
• 2 tablespoons dry Sherry
• 1 tablespoon Worcestershire sauce
• 8 slices American cheese
• 2 tablespoons unsalted butter
• 2 sturdy, seeded (potato) hamburger rolls, halved
• 4 slices Beefsteak tomato (about ½ inch thick each)
• ½ head Iceberg lettuce, broken into 4 small “piles”
• 2 “half sour” pickles, cut into ½ inch thick rounds