Mayonnaise is one of those food products that should never be bought. Most of them have so many additives plus extra salts and sugars which we can all do without. So why not make your own, keep it healthier and it takes no time at all. You can make it with most blenders, stick blenders or by hand. You then have a basic cold sauce that can be adapted into many other sauces such as Tartar sauce in this recipe.