Indian cooking uses edible camphor which tastes mentholated. I have a jar by Swad, a common Indian food brand distributed in the US. I was going to use it in a dish with bananas and tasted it. It tastes like eating moth balls. I have foregone the pleasure of the banana dish. read more
Menthol crystals are called peppermint in India. And small amounts are added to beetle nuts. It really depends on what is the size of the crystal, a crystal of the size of fennel will do you mostly no harm. It freshens up the mouth, it helps if you are trying to hide bad breath or cigarette smoke. read more
And please keep menthol crystals away from children. My 5 Top Five Ways to Use Menthol Crystals 1. Menthol Rub and Cream. As I described above, my favorite way to use menthol crystals is to melt them in coconut oil and use as a multi-purpose moisturizing rub/cream. I use this mentholated coconut oil in and out of the bath and shower. read more