Curried Chicken and Rice Soup

INGREDIENTS

• 2 tablespoons unsalted butter
• 1 teaspoon sugar
• Kosher salt
• 1/3 cup jasmine rice
• 1 bay leaf
• 1 large onion, very thinly sliced
• 1 bone-in chicken breast (about 1 1/2 pounds), halved
• 2 medium carrots, sliced diagonally into 2-inch pieces
• 1 lemon, cut into wedges
• 3 tablespoons finely chopped fresh mint
• 1 1/2 teaspoons Madras curry powder
• 3 tablespoons chopped fresh dill
• 6 cups low-sodium chicken broth