https://nioteas.com/pages/tea-quiz -take the quiz, the answers are  sencha, 6%, and Monks. Then click apply my discount and on the next page scroll down and select a sample that you want. Add to cart and it will be free with free shipping with the discount already applied. –Update– the quiz questions change, but they let you play multiple times, and if you cant get them right before it ends you can clear the cookies or try an incognito window to play more.