A Wet grinder is a food preparation appliance used especially in Indian cuisine for grinding food grains to produce a paste or batter. Wet grinding is rare in western cuisine but common in Indian cuisine. Wet grinders are used to make pastes from grains and lentils and is used extensively in South Indian cuisine for preparation of popular dishes such as dosa, idly, vada, appam and paniyaram. It consists of a granite stones which rotate inside a metal drum with the help of an electric motor and the food grains get crushed between the stone and drum.