In some farmers grows rice and grind rice grains into rice. People say that rice is healthier than rice you buy in the supermarket.
However, there is a downside. That is the farmers' technology is not as good as rice producing factories and the rice of the farmers often contain tiny bits of stone which are as small as a rice and not easy to see. When you eat this rice, you might bite on them, which cause a terrible yucky feeling.
Rice producing factories have technology to get rid of these tiny bits of stone.
Do you say "these tiny bits of stone" "grits"?
So, before cooking the rice, the farmers often put the rice into a basket with tiny hole or into a washing bowl, then they wash the rice in water and move the rice gently to the left or right to look for the grits.
Do you say "I pan the rice for grits before cooking" or "I sift out the grits from the rice" (note: the rice will not go through the tiny holes of the baskets, it just stay in there)?
See this picture
Source: https://gaogiahung.com/vo-gao-dung-cach-de-khong-bi-mat-chat-dinh-duong/
also, Is it natural to say "I happened to bite on a grit while eating rice"?