Also called Black Beluga Lentils.
The product sold as "black lentil" is the whole urid bean or urid dal. The product sold as "white lentil" is the same lentil with the black skin removed.
It is very nutritious and is recommended for diabetics, as are other pulses. It is very popular in Punjabi cuisine of India and Pakistan where it is known as "sabit maash" and "minumulu" .