Red ginseng is made by drying water ginseng (unprocessed ginseng harvested directly from the ground) in the sun after it has been steamed under certain temperature conditions. Since ginseng is a perennial plant, red ginseng products are labeled with its age. 6-year-old ginseng has the highest content of active ingredients, so the highest grade of red ginseng is 6-year-old. However, since the production is very limited, there are also many 4-year old red ginsengs on the market. 6-year old ginseng liquid, as the name suggests, is a liquid boiled with 6-year old red ginseng as the raw material. It contains far more ginsenosides and other active ingredients than other red ginseng products, such as red ginseng tea and red ginseng sugar.