The black gram, urad bean, minapa pappu, mungo bean or black matpe bean (māṣa) is a bean grown in the South Asia. Like its relative, the mung bean, it has been reclassified from the Phaseolus to the Vigna genus. The product sold as black lentil is usually the whole urad bean, whereas the split bean (the interior being white) is called white lentil.
It is very popular in Punjabi cuisine as an ingredient of dal makhani. In Bengal, it is used in biulir dal. In Rajasthan, It is used to prepare dal which is usually consumed with bati.
Black gram originated in South Asia, where it has been in cultivation from ancient times and is one of the most highly prized pulses of India. It is very widely used in Indian cuisine. The Coastal Andhra region in Andhra Pradesh is famous for black gram. The Guntur District ranks first in Andhra Pradesh for the production of black gram.In Nepal it is known as Kalo maas Daal, Kalo daal(black legume) and it is a very popular Daal(legume) side dish that goes with curry and rice as a platter.Black gram has also been introduced to other tropical areas such as the Caribbean, Fiji, Mauritius, and Africa, mainly by Indian immigrants.