Pork, Wild Mushroom & Wholegrain Mustard Pie

Name: Pork, Wild Mushroom & Wholegrain Mustard Pie
Cook time: 50 min
Total time: 50 min
Cuisine: British
Ingredients: 5 sheets Jus-Rol, Filo Pastry; 750g diced pork loin (approx 2.5cm); 2 finely chopped shallots; 350g wild mushrooms, quartered or sliced; 2 cloves of garlic, chopped; 1 small bunch of sage, chopped; 50ml brandy; 50g Plain Flour; 500ml Chicken stock; 200ml single cream; 2tbsp Wholegrain mustard; 50g butter to sauté; Olive oil to brush pastry; Salt and cracked black pepper to season; 1 large onion, finely diced; 125ml Thwaites Bomber Ale (or other real ale of your choice)