Osaka Airport sells raw chocolate. If you are afraid of melting raw chocolate, you can buy another thermal insulation bag before you buy it. This thermal insulation bag is only for thermal insulation and can be used on the plane. However, this needs to be purchased separately, and the constant temperature time of this insulation bag can basically be guaranteed to be about 4 hours.
Raw chocolate is made of cocoa powder, cream and other auxiliary materials. After mixing, it is called raw chocolate before being heated, which is completely different from the common chocolate (which is called cooked chocolate after being heated).
Raw chocolate was invented by the Japanese. The biggest difference from French truffle chocolate is that raw chocolate is directly coated with cocoa powder with Ganesh, which saves the most difficult coating step, so the difficulty is extremely low. When cutting raw chocolate, you can prepare a cup of hot water, and pass it once every time you cut it, so that the cut chocolate will be particularly beautiful and easy to cut.