Peppermint, one of the largest spice plants, is cultivated in China. Menthol crystal and peppermint oil are the important raw materials for medicine, candy, tobacco, alcohol, beverages and other industries.
Peppermint oil of Fengle brand has high internal quality. The ratio of menthone and different menthone is more than 2, and the alcohol content of new peppermint is less than 3%.
 it is world-renowned. It is a colorless or pale yellow liquid with special cool scent and sharp taste at beginning then cold. It is can be mixed with ethanol, chloroform or ether at random.

Relative density (20/20℃):0.888 to 0.908
Conversion rate (20℃):1.456to1.466
Optical rotation (20℃):-17°to-24°/-22°to-30°
Insolubles in ethanol (20℃): one volume sample is miscible in 70% (V / V) 3.5 volume ethanol, the solution appears clarified.
Ester volume (in terms of Menthyl acetate): 2.0% to 6.5%
Total alcohol volume (in terms of Menthol crystal): more than50% more than65%