
According to the Asahi (Japanese) Fukuoka accounts for around 70% of Japan's 24,000 tons of mentaiko production. A local sushi company has begun sellling sets which include flavourings like mirin (sweet sake) cayenne pepper, yuzu and konbu which let you pickle your own roe from ultra spicy fashion to super sweet. They have so far sold 3,000 sets. At 3,150 yen, it's probably cheaper to buy the roe and flavourings and really do it yourself.
