Oroshigane
Encyclopedia
Oroshigane also known as oroshiki (下ろし器) are grater
Grater
A grater is a kitchen utensil used to grate foods into fine pieces. It was invented by François Boullier in the 1540s.-Uses:...

s used in Japanese cooking.

These oroshigane differ significantly from Western
Western world
The Western world, also known as the West and the Occident , is a term referring to the countries of Western Europe , the countries of the Americas, as well all countries of Northern and Central Europe, Australia and New Zealand...

-style graters, as they produce a much finer grating. Traditionally, these graters were tin-coated copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

 plates with many small spikes gouged out of the metal, but no actual perforations through the metal. These graters are still considered the best and are used by professional chef
Chef
A chef is a person who cooks professionally for other people. Although over time the term has come to describe any person who cooks for a living, traditionally it refers to a highly skilled professional who is proficient in all aspects of food preparation.-Etymology:The word "chef" is borrowed ...

s. For preparing wasabi
Wasabi
, also known as Japanese horseradish, is a member of the Brassicaceae family, which includes cabbages, horseradish, and mustard. Its root is used as a condiment and has an extremely strong flavor. Its hotness is more akin to that of a hot mustard rather than the capsaicin in a chili pepper,...

and yamaimo, graters with the surface made from shark
Shark
Sharks are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago....

 skin were exclusively used. These have an even finer grating surface than a metal one; much closer to a sanding paper. However, nowadays non-professional cooks
Cook (profession)
A cook is a person who prepares food for consumption. In Germany, Austria, Switzerland and Canada this profession requires government approval ....

 usually use much less expensive graters made from other metals, plastic
Plastic
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

, or ceramic
Ceramic
A ceramic is an inorganic, nonmetallic solid prepared by the action of heat and subsequent cooling. Ceramic materials may have a crystalline or partly crystalline structure, or may be amorphous...

s. A modern variation of these graters also has perforations and may come with a matching box so that the grated material drops through the grater into the box.

There are two versions of the grater in common use with different coarseness. The coarse grater is used to grate daikon
Daikon
Daikon , Raphanus sativus var. longipinnatus, also called White Radish, Japanese radish, Oriental radish, Chinese radish, lo bok and Mooli , is a mild flavoured, very large, white East Asian radish...

and the like, whereas the fine graters are used for grating wasabi or ginger
Ginger
Ginger is the rhizome of the plant Zingiber officinale, consumed as a delicacy, medicine, or spice. It lends its name to its genus and family . Other notable members of this plant family are turmeric, cardamom, and galangal....

. The fine graters are also sometimes sold as a wooden board covered with shark skin, which has many tiny teeth (dermal denticles) and give it a feel similar to sandpaper
Sandpaper
Sandpaper, also known as glasspaper, is a heavy paper with abrasive material attached to its surface.Sandpaper is part of the "coated abrasives" family of abrasive products. It is used to remove small amounts of material from surfaces, either to make them smoother , to remove a layer of material...

.
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