Minced Beef Pie

Beef
British
Pie
Meat
Minced Beef Pie
Vegetable Oil2 tbs
Minced Beef500g
Onion1 chopped
Tomato Puree1 tbls
Plain Flour1 ½ tbsp
Mushrooms75g
Beef Stock250ml
Worcestershire SauceDash
Shortcrust Pastry400g
Egg Yolks1