Originally Posted by BadNewsBrewery
My point - the flame color has less to do with the entrained air that is part of the convection process and more to do with the mix prior to the nozzle. Have you tried messing with the air valve in the propane line while the kettle is on?
If by air valve you mean the vent on the burner then yes. Right now it is wide open. If we close it at all the flame just gets yellower and yellower.
Every burner has the vent wide open and produces a nice blue flame. The only one that produces a yellow flame is the boil and it only does it when the kettle is placed on the burner.
The reason I brought up the holes idea is because I noticed on my turkey fryer that the heat shield around that burner has about 3 holes the size of a thumb on it....?