The volcanic ash plate “HAI” has been available for pre-sale on the Japanese crowdfunding site “Makuake” since June 6, 2021, and has been gaining popularity with sales exceeding 5 million yen. the HAI features a high far-infrared effect to roast meat, which produces less smoke and less smell. In Japan, far-infrared roasters with less smoke are popular among home appliances, and this product seems to have gained popularity because it can be used both outdoors and indoors.