Prep time
15 mins
Cooking time
None
Effort
Super easy
Serves
4
Put the mackerel into a bowl and mash with a fork, removing any bones. Add the prawns (chopped if large), yoghurt, spring onions, deseeded tomato, cucumber and lemon zest. Season with a little black pepper and stir everything together.
Toast the bread, then spread the fish mixture on top. Serve with cucumber slices and watercress.