Kheema: Indian Ground Beef with Peas

Name: Kheema: Indian Ground Beef with Peas
Ingredients: 3 tablespoons canola oil; 1 medium onion, finely diced; 4 cloves garlic, minced; One 1-inch thumb fresh ginger, peeled and minced; 2 teaspoons ground coriander; 1 teaspoon paprika; 1/2 teaspoon store-bought or Homemade Garam Masala, recipe follows; 1/2 teaspoon ground cumin; 1/2 teaspoon cayenne, optional; 1 pound ground beef; 2 medium tomatoes, chopped; Kosher salt and freshly ground black pepper; 1 cup shucked fresh English peas or 1/2 cup frozen peas, thawed; 2 teaspoons malt vinegar or apple cider vinegar; 1/4 cup chopped fresh cilantro, plus a few extra leaves for garnish; 4 chapatis or pitas, warmed; 3 large cinnamon sticks (if you have the kind you get at Indian stores, it's about 3 tablespoons of cinnamon bark bits); 3 tablespoons whole cloves; 1/4 cup green cardamom pods, shelled, husks discarded (about 2 tablespoons of seeds); 4 large black cardamom pods, shelled, husks discarded (about 1 tablespoon of seeds), optional