Caribbean Beef and Potato Pasty (Trinidad Aloo Pie)

Name: Caribbean Beef and Potato Pasty (Trinidad Aloo Pie)
Prep time: 45 min
Cook time: 1 h 45 min
Total time: 2 h 30 min
Cuisine: Caribbean
Ingredients: 400 g Beef Shin (small dice (or other stewing cut)); ½ tsp Salt; ½ tsp Black Pepper; 2 Spring Onions (sliced and washed); 1 handful Coriander; 1 Tomato, medium size (diced); 1 tbsp Ketchup; 1 tsp Mild Curry Powder; ½ Lime, juice only; 100 g Peas; 400 g Potatoes, waxy type (peeled and cut in small dice (keep them in water until needed)); 1 tsp Ground Cumin; 1½ tbsp Mild Curry Powder; 1 Red chilli (small dice); 3 Garlic clove (minced); 1 Onion, medium size (sliced); 3 tbsp Vegetable Oil; 1 Beef stock cube; 600 ml Water; 1 tbsp Cornflour (optional, to thicken the filling if needed); 280 g Plain Flour (sieved); ¼ tsp Ground Cardamom; ½ tsp Ground Turmeric; 2 tsp Baking Powder; 175 ml Water; 500 ml Vegetable Oil (for shallow frying)