Mandolines, vegetable cutters and knife blocks

A badly cut vegetable cooks badly, and it is the most common reason a dish fails without anyone knowing why. Pieces of different thickness never finish together: when the small ones are done the big ones are raw, and the reverse if you keep going. Evenness of cut therefore matters more than the heat.

Hence the value of a guided blade. A mandoline does not cut better than a good knife in a good hand — it cuts **the same on every pass**, which no hand does over a kilo of carrots. The gain is not speed, it is consistency.