Ingredients ??? 2 slices bread (rye would be great here) ??? 1 smoked-mackerel fillet (you could use another oily fish such as sardines or salmon here) ??? 1 tbs mayo ??? Wasabi (as much as you like) ??? 1 rib of celery, finely sliced ??? A handful of baby spinach ??? A squeeze of lemon juice Method Mix the wasabi and mayo together and spread the mix on both slices of bread.