roasting method is used, the weather can affect the results, especially if roasting outdoors. Cold temperatures can extend the roasting time, adversely affecting the bean. In extreme cold the roaster may fail to reach proper temperature. Humidity is a lesser concern; it changes the roasting time and resulting quality. Other unusual home roasting methods have been tried by inventive enthusiasts, such as various modifications of fluid-bed roasters and popcorn poppers, the use of a heat gun aimed into a metal bowl, a heat gun aimed into a bread machine, a modified rotisserie in a gas-fired barbecue grill, and many more. See also Dry roasting References Coffee preparation