A cusabi is not a salad dressing. Salad dressing can be made from cusabi, but cusabi is a separate food item, from which sauces and salad dressings can be made, composed of cucumber and wasabi and is obviously a contraction of those two major ingredients. Such things as oils, soy, and other ingredients can make a cusabi dish. Cusabi hamburgers have those ingredients within.
a salad dressing
mayonnaise, horseradish, lemon juice, cucumbers, wasabi, spices