Spicy Cumin Lamb Meatballs

Name: Spicy Cumin Lamb Meatballs
Ingredients: 1 1/2 tablespoons whole cumin seeds, toasted; 1 1/4 teaspoons coarsely ground Sichuan peppercorns (optional); 1 teaspoon crushed red chile flakes; 4 large garlic cloves, crushed, divided; 1 (2-pound) boneless leg of lamb; 1 cup cold cooked long-grain white rice; 3 tablespoons canola oil, divided, plus more for hands; 1/2 cup chopped fresh cilantro, plus more for garnish; 1/2 cup heavy cream; 1/3 cup chopped fresh flat-leaf parsley; 2 large egg yolks; 2 tablespoons olive oil; 6 1/2 teaspoons kosher salt, divided; 1 cup panko; 5 tablespoons white sesame seeds, toasted, divided; 1 tablespoon black sesame seeds, toasted; 2 large green bell peppers, thinly sliced lengthwise (about 5 cups); 2 medium-size red onions, halved and thinly sliced (about 4 cups); 4 small jalapeños, seeds and ribs removed, thinly sliced lengthwise (about 2/3 cup); 1 tablespoon finely chopped peeled fresh ginger; Hot cooked long-grain white rice, for serving