Urad mung, the black gram, urad bean, minapa pappu, mung bean or black matpe bean (māṣa) is a bean grown in the Indian subcontinent. 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 should not be confused with the much smaller true black lentil (Lens culinaris).
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 and Pakistan. It is very widely used in Punjabi cuisine and is often referred to as maah di daal in the native language by Punjabis. The Coastal Andhra region in Andhra Pradesh is famous for the black gram. The Guntur District ranks first in Andhra Pradesh for the production of black gram. Black gram has also been introduced to other tropical areas such as the Caribbean, Fiji, Mauritius, and Africa, mainly by Indian immigrants.