Seekh Kebab With Mint Chutney

Name: Seekh Kebab With Mint Chutney
Ingredients: 2 1/4 pounds ground lamb; 1 packed cup shredded Amul cheese or white Cheddar (about 3 ounces); 1/3 packed cup very finely chopped fresh cilantro; 2 tablespoons plus 2 teaspoons deggi chile powder, plus additional for garnish; 1 tablespoon minced fresh ginger; 3 garlic cloves, minced; 1 tablespoon minced green Thai chile or serrano chile (with seeds); 2 teaspoons garam masala; 1 teaspoon black cumin seeds (shah zeera) or regular cumin seeds; 3/4 teaspoon ground cardamom; Kosher salt; Neutral oil, for greasing; 3 packed cups roughly chopped cilantro, leaves and tender stems; 2 packed cups roughly chopped fresh mint leaves; 1/4 cup finely chopped red onion; 1 teaspoon minced green Thai or serrano chile (seeds included); 2 tablespoons anardana (dried pomegranate seeds), crushed, or very finely chopped fresh mango; 2 teaspoons lemon juice; 1 teaspoon granulated sugar, plus more as needed; Red onion, very thinly sliced, for serving (optional)