Testing Rasp-Style Graters
We use rasp-style graters to zest citrus fruits and grate hard cheeses, ginger, shallots, garlic, nutmeg, and more. One manufacturer has ruled the fine-grating roost for years—heck, it invented the game. Grace Manufacturing, the parent company of Microplane, pioneered and patented a special photographic chemical etching process that creates razor-sharp grating teeth. The company initially produced long metal rasps for woodworking but found that consumers were using them in the kitchen, too, so they added a culinary line. But their patent on this process expired in 2011, freeing other manufacturers to create their own versions of this handy tool. Was our old favorite still the best?
How to Keep a Rasp-Style Grater Sharp
Most of the rasp-style graters we tested come with a cover for the grating surface—and for good reason. The graters’ teeth actually poke outward slightly—that’s how they bite into the food. These 3-D teeth can flatten out over time as the graters get thrown into drawers or slid into utensil holders. If the teeth on your Microplane Zester/Grater feel dull, it’s probably not that the teeth’s blades have dulled but that the teeth have flattened, so they don’t have the same bite.