Turkey & leek pie - Good Food Middle East

Ingredients

• 8 rashers smoked streaky bacon , chopped
• 50g butter
• 2 leeks , trimmed, halved and sliced
• a few thyme sprigs , leaves picked
• 50g plain flour , plus extra for dusting
• 400ml turkey or chicken stock
• 100ml double cream or full-fat crème fraîche
• 1 tbsp wholegrain mustard
• 600g leftover cooked turkey meat , shredded or cut into chunks
• 175g plain flour , plus extra for dusting
• 1 tbsp mustard powder
• 125g frozen butter
• 1 egg , beaten