Great video, and method. I am considering buying a Boil kettle, saving some extra equipment. This will allow me to do just that. I have a couple of questions.
How large are the nylon bags? How many pounds of grain do see as a limitation to this method? To allow for the extra displacement of water by the larger amount of grain You mentioned using less water for bigger beer recipes. Would I be better off using a 20 gallon kettle, than a 15 gallon? If I do use a 15 gallon boil kettle. Is lower amount of water then made up during the sparge?