Put the capers, parsley and olives in a food processor and whizz until finely chopped. Stir the mixture into the softened butter and season with freshly cracked black pepper.
Spoon the butter along a large sheet of clingfilm and roll into a sausage shape, pushing out any air bubbles. Twist the ends of the ‘sausage’ to seal and chill until needed.
To serve, slice the sausage into small discs and leave to melt over a just-baked cod or other fish of your choice. For a delicious twist, melt it into plain mashed potato.
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Recipe taken from the SORTED Food recipe collection.