How to Use Plantain: If fresh plantain grows in your yard, you can make sure it has not been sprayed by pesticides or pets and use in teas or the young leaves in salads. For stings and bites, make a poultice of fresh plantain leaf and bentonite clay with water to form a paste.
Burnt food is considered carcinogenic, simply because the carbon molecules have the ability to disrupt our dna, it's able to break portions of DNA and insert itself within... this leads to our dna reproducing it self 'wrongfully' with a different structure.. potentially causing cancer.
Someone said to me that burnt food was as dangerous as a cigarette, which is a pretty big claim, so I've been searching the web and some research databases, looking for evidence. There's very little on the web about it, besides a lot of idle speculation on messageboards.