Guys. I've seen a lot of talk about tongue bite being caused by the pH of the tobacco, or the pH of the smoker's mouth. It's nonsense. There is no tobacco acidic or alkaline enough to cause necrosis. Burley is notorious for having the worst tongue bite, and its pH is neutral. There are foods with pH more extreme than any tobacco, but they don't cause tongue bite.
Look at this article:
Nicotine stomatitis | DermNet - https://dermnetnz.org/topics/nicotine-stomatitis
Smoker's keratosis is a medical condition caused by extreme heat in the mouth. According to one study, about 60% of pipe smokers have smoker's keratosis. See where I'm going with this?
Smoke is made up of tiny particles. Tongue bite is caused by extremely hot smoke particles entering your mouth. Burley most likely has worse tongue bite because it burns at a higher temperature. Charcoal filters decrease tongue bite because they filter out larger particles from the smoke; large particles have more mass and transfer more heat to your mouth resulting in a burning sensation, while the smaller particles cool quickly enough not to burn you. Churchwardens tend to help with tongue bite because they allow the smoke to cool; smoke particles are so small that their temperature changes drastically in milliseconds, and every inch of stem the smoke travels down will reduce the temperature of the smoke particles, leaving only the largest particles with enough heat to burn you.
So, that's it. Mystery solved. We can all stop reading tea leaves and consulting the stars to give us the answer to this ineffable mystery. The next time I read some garbage about pH causing tongue bite, I'm going to reach through my computer screen and strangle the idiot who wrote it.
Not advisable. Nor is the person who writes that impaired. I took the word De-mystifying out of your title.