BBC Food - Recipes - Chicken and chorizo empanadas

Ingredients

• 4 chicken thighs , on the bone and skin on
• 1 tbsp olive oil
• 1 onion , finely chopped
• 1 garlic clove, crushed
• 100g/3½oz British-style chorizo , finely diced
• ½ tsp cumin seeds
• 50g/1¾oz raisins
• salt and pepper
• 150g/5½oz unsalted butter
• 300g/10½oz plain flour
• large pinch salt
• 1 free-range egg , lightly beaten
• beaten egg , to finish