One for material collection. (water measuring, milling grains, hops, re-cleaning boil kettle and all brew tools.) one during mash. (90 minutes, which includes bottling the last batch) one during the boil. (also 90 minutes and includes cleaning, hops additions, and yeast prep) and one during cooling and pitching of yeast. So 4 during brew day. Maybe a brew or two after pitching. Since it goes over several hours it's more for enjoyment than results.