As for the claim that high-quality salt contains magic elements, Hudson had never taken it seriously. If it were truly effective, it wouldn't be possible to put it on the market for sale.
Using the barely noticeable effects as a basis for product premiumization and marketing, to Hudson, was just a way to tax the gullible.
If one really wanted to increase the speed of training, it was better to buy "Ha's Magic Potion." Although it was a diluted version with no taste or appearance to speak of, the effects were still quite good.
The only problem was that it was prohibitively expensive and production was pitifully low, requiring advance payment for reservations and without any guarantee of timely delivery.
Hudson was forced to limit shipments. In the Magic Potion Circle, Ha's Potion was close to being labeled a "cancer."
