craft hot spring
In addition, hot springs can be said to be the ultimate "mineral soup" created by slowly dripping rainwater and underground water into mineral-rich soil over tens of thousands of years, just like coffee.
1. Craft hot spring method
Rufflot's pronoun "craft hot spring". It is now possible to enjoy a full-fledged hot spring at home by enhancing and concentrating the hot spring ingredients with our unique blending technology. We have developed a "craft hot spring" technology that pours ore containing condensed hot spring ingredients into famous hot springs nationwide and drip extracts them.