Curried Meatballs

Ingredients

• Olive oil
• 6 scallions, cut into 1-inch pieces
• 2 jalapenos, seeds removed if desired
• 6 garlic cloves
• 1 (1-inch) piece ginger, peeled, chopped
• 1 tablespoon fresh lemon juice
• 1 tablespoon garam masala
• 1 teaspoon ground coriander
• 1/2 teaspoon ground cumin
• 1/2 teaspoon cayenne pepper
• 2 pounds ground beef (20% fat)
• 1 large egg, beaten to blend
• 3 tablespoons plain yogurt
• 2 teaspoons kosher salt
• 1/4 cup olive oil
• 4 medium onions, chopped
• 10 garlic cloves, crushed
• 1 (1 1/2-inch) piece ginger, peeled, chopped
• 3 dried chiles de arbol
• 4 teaspoons curry powder
• 4 teaspoons ground cumin
• 4 teaspoons ground turmeric
• 3 tablespoons ground coriander
• 1 teaspoon black peppercorns
• 1 (14.5-ounce can) crushed tomatoes
• 1 bay leaf
• 1 tablespoon kosher salt, plus more
• 1 tablespoon fresh lemon juice
• 1/2 teaspoon cayenne pepper
• Cilantro leaves with tender stems (for serving)