While I am really not into alcohol stoves, all of these videos make me wonder about the flame mechanics of alcohol stoves vs whitegas stoves and compressed gas stoves. When a flame touches a cold surface it cools and stops or slows combustion leaving unburned components and carbon monoxide. Alcohol stoves seem to have long flames that appear unstructured and sort of wrap around the pot. Anyway I had a friend who did a study of the flames inside a car engine and I was just starting to wonder. However it also seems that a flame can do a laminar flow too, so its a lot more complicated than it seems at first. Just wondering....
Jim grin
These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.