Simple seafood chowder

INGREDIENTS

• 1 tbsp vegetable oil
• 1 large onion , chopped
• 100g streaky bacon , chopped
• 1 tbsp plain flour
• 600ml fish stock , made from 1 fish stock cube
• 225g new potatoes , halved
• pinch mace
• pinch cayenne pepper
• 300ml milk
• 320g pack fish pie mix (salmon, haddock and smoked haddock)
• 4 tbsp single cream
• 250g pack cooked mixed shellfish
• small bunch parsley , chopped
• crusty bread , to serve