Combine the ground lamb, onion, chilies, soy sauce, and Worcestershire sauce in a large pot. Season with ginger and garlic pastes, white pepper, cinnamon, cardamom, and cloves. Cook over medium heat until the meat is browned and onions are tender, about 15 minutes. Mix in cilantro, cover and set aside.

Preheat the oven to 375°F (190°C). Lay puff pastry sheets on a floured surface. Cut each into 9 squares, rolling out to 1/4 inch thickness. Spoon 1.5 tablespoons of meat mixture into the center of each square. Brush edges with water, fold to triangle shape, and press to seal. Place patties onto foil-lined baking sheet with an inch gap between each, and lightly brush tops with beaten egg.