Rub the mackerel fillets with enough salt and put them in the refrigerator for at least three hours or one night. Then remove all bones, rinse with salt, cut the fish into thin slices and marinate for 30 minutes in a mixture of vinegar, water and sugar.
Arrange on individual plates, adding a tbsp. grated radish and grated carrot form, garnish with water cress or parsley. Offer small sauce bowls with a dipping sauce to go with it.
Sauce:
Stir soy sauce, vinegar, ginger and sugar until sugar is dissolved.
Sauces