Pour 8 quarts (7.5 liters) filtered water into a pot large enough to hold the mash, but small enough to fit into an electric smoker. (You don’t have to use an electric smoker, but I find it’s a great way to hold the mash rest temperature of a small mash.) Bring the water up to 163˚F (73˚C) and add the grain. Rest at 153˚F (67˚C) for one hour by putting the pot into the smoker, which has been warmed up to the rest temperature. In the meantime, bring five gallons (19 liters) of filtered water to 170˚F (77˚C) in the main brew pot.
At the end of the mash rest, line the larger brew pot with a Brew in a Bag nylon bag. Pour the mash from the small pot into the larger pot. Stir the grain and water, then remove the bag – squeezing to extract the last of the wort.
