Method of processing black ginseng by taking sun-dried ginseng, red ginseng and sun-dried American ginseng as raw materials

The invention relates to the field of processing ginseng and American ginseng, namely processing black ginseng by taking sun-dried ginseng, red ginseng and sun-dried American ginseng as raw materials.The method includes the following steps: (1) selecting sun-dried ginseng, red ginseng and sun-dried American ginseng with the same age and specifications and heating to 98-100 DEG C to be steamed ina steamer for 5 hours; (2) continuously increasing the temperature to 100-102 DEG C and steaming for 4.5 hours; (3) continuously increasing the temperature to 103-105 DEG C and steaming for 4.5 hours;(4) continuously increasing the temperature to 106-108 DEG C and steaming for 3.5 hours; (5) cutting off the steam source, and opening the steamer when the temperature in the steamer drops to 50-60 deg C; and (6) drying the sun-dried ginseng, red ginseng and sun-dried American ginseng in a drying chamber at 50 +/- 2 DEG C until the water content is less than or equal to 12%, and taking out the materials to obtain the finis