Drink All / Beverage containers

Take a look at the current beverage barrel, it always been left some drinks at the bottom of the barrel at last.In addition, everytime pouring drinks last remained from bev- erage barrel to our cups, we must tilt the entire barrel so as to pour all drinks without the remaining. It's a waste that we didn't to pour all drinks from the barrel. However, the movement tilting the entire barrel is not only troublesome but also dangerous actually. By the "Drink all" barrel, which used inclined surface at the bottom of the barrel, we won't worry about this anymore. Owing to the inclined surface, it's absolute that any drinks won't left in the barrel.