Indian-Style Hamburgers

Ингредиенты

• 3/4 cup (140 g) fresh mango, chopped (about 1 large mango)
• 2 tbsp sugar
• 2 tbsp (30 ml) lime juice
• 1/4 tsp curry powder
• 1 small red onion, cut into thin rounds
• 2 tbsp (30 ml) rice vinegar
• 1 tsp sugar
• 1 lb (450 g) lean ground beef
• 1/2 tsp garam masala
• 4 brioche hamburger buns
• 1/2 cup (125 ml) plain yogurt
• 4 leaves curly lettuce, torn
• 1/4 cup (10 g) mint leaves, torn