Billingsgate stargazy pie - Discover Seafood

Ingredients

• 30g butter
• 30g plain flour
• 250ml double cream
• 200ml fish stock
• 1 tbsp English mustard
• 1 sheet puff pastry
• 2 eggs, hard-boiled and grated
• 1 onion, diced
• 4 rashers smoked bacon, cut into 1cm lengths
• ½ bunch chopped parsley
• 1 glass white wine
• 2 small mackerel, filleted (heads and tails reserved for the top of the pie)
• 1 whole langoustine, blanched for 2 minutes and chilled
• 100g smoked haddock
• 100g salmon fillet
• 100g whiting fillet