Spilt Proof Bowl / Kitchenware

In restaurant or home, sliting out the soup offen bring us much trouble. Adding a lid or having less soup in the bowl are options, but not the best ones.
Spitling soup out is caused by the movement of the liquid. So the spiral inwall will transfer the movement to rotating which limit the liquid in certain areas. In that way, Spilt proof bowl prevent the soup spilt by the special structure which remain the habbit we use the bowl.