Whole urad dal is a bean grown in southern Asia. It is largely used to make dal from the whole or split, dehusked seeds . Black gram originated in India where it has been in cultivation from ancient times and is one of the most highly prized pulses of India. It is an erect, sub-erect or trailing, densely hairy annual herb. The tap root produces a branched root system with smooth, rounded nodules. The pods are narrow, cylindrical and up to 6 cm long. The bean is boiled and eaten whole or after splitting into dal.