It is because the tobacco leaves are not dried enough and fermented enough. It is better to ferment the tobacco leaves naturally.
If you are not a professional tobacco person, I recommend a method for you to try:
A fermentation production method of tobacco leaves
Application number/patent number: 200810058739
The invention discloses a fermentation production method of tobacco leaves. First, the threshed and re-cured tobacco leaves or the first-cured tobacco leaves are rehydrated to a moisture content of 16% to 22%, fermented for 3 days at a temperature of 25°C to 40°C and a humidity of 70% to 90%, and then the tobacco leaves are dried to a moisture content of 16% to 22%. 11% to 13%, repeat the above process to 180 to 700 days. This method stimulates the activity of unpassivated biological enzymes in tobacco leaves, and simultaneously ferments with non-enzymatic oxidation and microbial action. By controlling temperature and humidity, the tobacco leaves are quickly alcoholized. The protein, nicotine and tar contents of the obtained tobacco leaves are lower than those of tobacco leaves that are naturally alcoholized or alcoholized with biological enzymes, and the aroma-causing substances and reducing sugar contents are higher than those of tobacco leaves that are naturally alcoholized or alcoholized with biological enzymes. There are many types of aroma-causing substances, the aroma is natural and delicate, and the smoke is mellow. The invention has the characteristics of simple operation, low cost, strong operability, standardization and controllability, and is convenient for realizing large-scale industrial production.
Application date: July 29, 2008
Publication date: December 17, 2008
Authorization announcement date: June 2, 2010
Applicant/patentee: Hongyun Honghe Tobacco (Group) Co., Ltd.
Applicant address: Shangzhuang, Beisheng District, Kunming City, Yunnan Province