Homemade Caramelized Onion Burgers | Food From Portugal

Ingredients

• 150 grams (5 1/3 ounces) ground beef
• 150 grams (5 1/3 ounces) ground pork
• 1/2 teaspoon pepper
• 1/2 teaspoon nutmeg
• 1 egg yolk
• A drizzle of vegetable oil
• 1/2 tablespoon breadcrumbs
• 2 medium onions
• 1 tablespoon Worcestershire sauce
• 50 ml (1/4 cup) olive oil
• 2 tablespoons dark brown sugar
• 4 pita breads or burger bans
• 1 teaspoon salt