The appearance of the dried seeds of authentic white lentils is oblate oval or oblate oval, with a length of 8-12mm, a width of 6-9mm and a thickness of 7mm. The surface is pale white or yellowish, smooth, slightly shiny, hard and the seed coat is thin and brittle. The appearance of imported lentils is very similar to that of genuine white lentils. The main difference is that the counterfeit seeds are large and thin, with a length of10-15mm, a width of 7-10mm and a thickness of 4-5mm, which is obviously different from the genuine ones.

White lentils, a crop, can be dried and eaten after frying. Originated in tropical areas such as India and Indonesia, it was introduced to China during the Han and Jin Dynasties. Harvest mature fruits in autumn and winter, dry them, take out the seeds, and then dry them. The seeds are oblate oval or oblate, with pale white or yellowish surface, smooth and slightly shiny, and a raised white half-moon caruncle on one side edge. Slight breath, light taste, and bean smell when chewed. Mainly distributed in Liaoning, Hebei, Shanxi, Shaanxi, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan Province, Henan, Hubei, Hunan, Guangdong, Hainan, Guangxi, Sichuan, Guizhou, Yunnan and other places.