&sq=&lang=&file=File:Wiki_letter_w.svg){kind=small} | This article's lead section may be too short to adequately summarize the key points. (November 2024) |
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Grog, also known as firesand and chamotte, is a raw material usually made from crushed and ground potsherds, reintroduced into crude clay to temper it before making ceramic ware. It has a high percentage of silica and alumina.
It is normally available as a powder or chippings, and is an important ingredient in Coade stone.