You good people were hammering on about the " alder smoke " somewhere down the thread and I was wondering about how long the smoke is actually supposed to last . When I throw the soaked chips on the coals , the smoke only lasts 5 minutes . I wait for the coals to go from glowing red , to a light grey (still very hot ) . Is this average ? There never seems to be any given time-line for this and what I am really looking for is a HEAVY smoke !!!!! What am I missing?