Lamb Meatballs with Tomatoes and Chickpeas

Name: Lamb Meatballs with Tomatoes and Chickpeas
Ingredients: 1 medium onion; 1 teaspoon cumin seeds; One 14-ounce can chickpeas; 3 tablespoons extra-virgin olive oil, plus additional for mixing and shaping; 1 pound ground lamb; 3/4 cup plain breadcrumbs; 1/2 cup whole milk; 2 large eggs; 1 tablespoon garam masala; Fine sea salt; Handful fresh cilantro; 1 tablespoon Garlic Ginger Paste, recipe follows; One 14-ounce can diced tomatoes; 1/2 pound fresh ginger; 1/3 pound (about 30 cloves) garlic cloves; 1/2 teaspoon fine sea salt