Ham hock and turkey pie

Ingredients

• 100g Ham Hock – or thick cut ham
• Approximately 250g cooked turkey – whatever leftovers you have
• 25g butter
• 1tbsp olive oil
• 1 leek – finely sliced
• Small bunch Fresh thyme finely sliced
• 2 tbsp plain flour
• 1 tbsp apple cider vinegar
• 1 1/2 cup vegetable stock (or chicken/turkey stock)
• 200g Roddas clotted cream
• 1/2 cup milk
• 1 1/2 tbsp mustard
• Small bunch fresh tarragon roughly chopped
• Puff pastry
• 1 egg for glazing
• 1 tbsp milk for glazing
• Flour for dusting
• Salt and black pepper