No need to confirm purchase, instant purchase is OK. Stored in an environment without smokers or pets. This is a book by Mr. Akira Yoshida, who passed away suddenly at the age of 60 in 2008. If you're working with electric kilns and gas kilns, and you eventually want to fire and bake your own works, this is the book you'll want to have in your hands! Reading this book was the catalyst for me to create pottery using a kiln made with two shichirin (Japanese charcoal grills). I was moved by the unexpected colors of the chopstick rests I made. This is an out-of-print, hard-to-find book, and it's sold for over 7,000 yen on Amazon and Mottainai Honpo.