There are different ways one can take vasambu internally. Some ways are: 1. Crush Vasambu and boil it in water.
Boil till the water is reduced to half quantity. Filter and drink the boiled water. Dip Vasambu in water. Swipe it on a stone and use. For babies , this is one of the best way to give.
Show Vasambu directly on flame till it is burnt and become black.
Use a tong or pot holder to heat on direct flame. You can swipe it on a stone and use it.