Foam-avoider / dixie cup

We usually face this situation that there will be lots of foam when we pour cola into a cup and we have to wait for the disappearance of the foam and it means that we always waste time. Suppose that we pour cola into a plate, what will happen? Yes, we can imagine that foam will disappear immediately! The key to solve the problem is the size of contact area which is between cup and foam. So, we designed this cup by to increase the contact area to eliminate foam. Firstly, just to combine the normal cup with the plate. And secondly, to make some drape is also a good way to increase surface area.