1 small onion, chopped
250g/9oz plain flour, plus extra for dusting
1 tbsp plain flour
a few dashes of Worcestershire sauce
200ml/7fl oz beef stock
salt and pepper
splash of oil, for frying
pinch salt
1 tbsp tomato pur茅e
125g/4陆oz chilled butter, cubed
2 medium egg yolks
500g/1lb 2oz lean steak mince
1 free-range egg, beaten for egg wash
100g/3陆oz frozen peas