Chicken with cider infused chorizo empanadas

Name: Chicken with cider infused chorizo empanadas
Ingredients: 17.5 oz / 500 g plain flour; 1 tsp fine salt; 7 oz / 200 g cold unsalted butter (cubed); 2.5 fl oz / 75 ml cold water; 2 tsp white wine vinegar; 1 egg; 1 additional egg (beaten, to glaze); 3 tablespoons of olive oil; 1 onion (finely chopped); 3 cloves of garlic (crushed); 3.5 oz / 100 g chorizo (diced); 3.5 fl oz / 100 ml cloudy cider; 7 oz / 200 g cooked chicken (roughly chopped); 2 tbsp Mayonnaise (mixed with a little Olive Oil); 4.5 oz 125 g pitted black and green olives (halved); 1 tomato (grated and skin discarded); 1 tablespoon of sweet Spanish paprika; Squeeze of lemon juice; Handful of chopped flat leaf parsley; Salt and white pepper (for seasoning); 1 tablespoon of crushed Chilli flakes (optional for some spice)