Cornish pasties

Name: Cornish pasties
Prep time: 30 min
Cook time: 2 h
Total time: 2 h 30 min
Cuisine: European, British
Ingredients: 500 g stewing beef (gravy beef or chuck steak), trimmed and cut into pieces (3 cm); 550 g plain flour; 135 g salted butter, chilled and cut into pieces; 135 g lard, chilled and cut into pieces; 1 pinch sea salt; 160 g chilled water; 140 g brown onion, cut into quarters; 160 g carrot, cut into pieces (3 cm); 100 g salted butter, cut into pieces; 160 g swede or turnip, cut into pieces (3 cm); 160 g potato, peeled and cut into pieces (2-3 cm); 1 tsp ground white pepper, to taste; 1 ½ tsp Chicken stock paste (see Tips); 2 tsp plain flour; 60 g Worcestershire sauce; 1 egg, lightly beaten; tomato sauce, to serve