Green Meatball Curry

Name: Green Meatball Curry
Ingredients: 14 ounces ground lamb, (ask your butcher to grind it three times); 2 large slices of white bread, crusts removed and crumbed; 1 large egg, whisked; Salt and freshly ground black pepper; 1 ½ teaspoons garam masala; 2 teaspoons ground cumin; 2 tablespoons vegetable oil; 1 small–medium onion, peeled and finely chopped; 1 ¼-inch piece of fresh ginger, peeled and quartered; 7 large cloves of garlic, peeled; 2–6 thin green chiles, deseeded if preferred; 1 ½ cups coconut milk; 1 ½ teaspoons ground coriander; 1 cup packed fresh cilantro leaves and stalks; 1 teaspoon tamarind paste, or to taste