The sweet caramel flavored chocolate comes through strongly in each bite! There are also biscuit bits inside. Quite a bit going on in each little piece of chocolate. The milk chocolate coats the classic Black Thunder cookie and puff crisp center. This has become one of the most popular chocolate bars in Japan. In fact, tourists often stock up on them once they discover how delicious these are. Each mini bar weighs 13 grams so you get 2x13 = 26 grams. This version is a rare find since they are regional.