Mandoline

A mandoline (/ˌmændɵˈlɪn/; ) is a cooking utensil used for slicing and for cutting juliennes; with suitable attachments, it can make crinkle-cuts. It consists of two parallel working surfaces, one of which can be adjusted in height. A food item is slid along the adjustable surface until it reaches a blade mounted on the fixed surface, slicing it and letting it fall.