Mackerel and rye crisps

In a shallow bowl, add the red onion and cover with apple cider vinegar. Leave this to pickle while you prepare your mackerel.

In a medium-sized mixing bowl, combine the smoked mackerel, cayenne, cream cheese, lemon juice, and lemon zest. Mix well to combine, and season with salt and pepper.

Arrange your rye crisps with the mixed lettuce, cucumber, mackerel, and pickled onion, and top with fresh dill.