Jeolgu (Korean: 절구) and gongi (공이) are a type of traditional Korean mortar and pestle set, used for pounding grains or tteok (rice cake).

[1][2][3] They can be made with timber, stone, or iron.

[2] Jeolgu is a bowl-shaped vessel in which grains or tteok can be pounded, and gongi refers to either a pestle for a mortar or a stamper for a stamp mill.

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