The high nicotine level in all Thunder chewing tobacco is achieved by adding a higher ratio of tobacco leaves, increasing the strength the natural way. No pharmaceutical nicotine is added, natural tobacco all the way!
Chew is a modern style of chewing tobacco, much similar to Swedish snus. You can simply keep the Chew somewhere in your mouth, for instance under your upper lip like snus, and the chewing bag will slowly deliver taste and nicotine. However, if you occasionally chew lightly on the chewing bag there will be an instant higher release of both flavor and nicotine.