But this knife can be desperately infuriating in its trickiness to sharpen. This is the serrated knife – a fiercely toothy ...

Joe Gamache, an expert cutler, says there are hundreds of devices, techniques and theories about how to sharpen a knife. Some sharpening methods are arcane, and some are ridiculously complicated.

Unlike your standard chef's knife, serrated knives don't need constant sharpening to stay effective. Those little teeth hold their edge longer because they only make partial contact with whatever ...