I'm mainly referring on the nutritional and health benefits that the in-laws perceived if they were bought as souvenir a few thousands dollars worth of 1 kg ginseng as opposed to the equivalent of 1 kg ginger worth a few dollars [1],[2].
[1] Ginseng:
https://en.wikipedia.org/wiki/Ginseng
[2] Ginger:
"Research indicates that American ginseng may improve short-term working memory and reaction time, particularly at lower doses, and some positive results were noted in older adults and people with schizophrenia. However, the overall effectiveness on cognition remains uncertain because no significant improvements were found in verbal memory or attention."
https://examine.com/supplements/american-ginseng-panax-quinq...