Burn Line
Smoking & Technique
Definition
The boundary between ash and unburned tobacco, visible as a ring around the cigar. Its shape reports on construction, humidity, and smoking pace.
Why it matters
Reading the burn line tells you whether to correct course, since a wandering line usually signals a moisture imbalance or a filler leaf that is burning at a different rate.
In context
"The burn line stayed razor sharp for the whole first third."