Chicken Curry Pasties

Name: Chicken Curry Pasties
Prep time: 30 min
Cook time: 50 min
Total time: 1 h 20 min
Cuisine: Asian
Ingredients: 1 tablespoon vegetable oil; 1/2 teaspoon ground coriander; 1/2 teaspoon ground turmeric; 1/2 teaspoon ground cumin; 2 teaspoons curry powder; 1/2 cup (125ml) coconut milk, or more as needed; 2 Spanish onions, chopped; 1 stalk lemon grass, thinly sliced; 1 red chilli, roughly chopped; 1 large potato, diced; 375g skinless, boneless chicken breast, cut in bite-sized pieces; 1 teaspoon salt; 1 (500g) packet frozen puff pastry, thawed