By Max Halley and Ben Benton
Sandwichieros (the fine men and women who make sandwiches professionally) have known for centuries that the backbone to any fine sandwich is a rich, piquant and fully flavoured sauce. This sauce can come in many guises, as this chapter will be quick to highlight, but the one that we all return to is mayonnaise. The sandwich mother sauce.
Below you will find a recipe for the perfect mayonnaise. After that you will find ways to bastardise, tweak, twist and manipulate it. Go wild. Do n