BBC Food - Recipes - Traditional pie 'n' mash with parsley liquor

Ingredients

• 1 tbsp olive oil
• 1 onion , chopped
• 2 cloves garlic , finely chopped
• 450g/1lb minced beef steak or beef mince
• 1 tsp English mustard
• 1 tbsp tomato purée
• 1 beef stock cube
• vegetable oil
• 150ml/5fl oz brown ale
• 100ml/3½fl oz beef stock
• 2 tbsp plain flour
• salt and freshly ground black pepper
• 350g/12oz self-raising flour , plus extra for dusting
• 225g/8oz beef suet
• large knob of butter , softened, for greasing
• 450g/1lb ready-made shortcrust pastry , for the top of the pie
• 1 free-range egg yolk , lightly beaten
• 2 large potatoes (preferably Rooster or Nadine), peeled, cut into chunks
• 100ml/3½fl oz hot milk
• knob of butter
• drizzle chilli oil (optional)
• 50g/2oz butter
• 50g/2oz cornflour
• 500ml/18fl oz chicken stock
• generous bunch parsley , leaves only, chopped
• 1-2 garlic cloves, roasted and puréed, to taste
• jellied eels