<p>Cole uses a hydrometer to check the original gravity of the liquid mash of grains, called the wort. Original and final gravity measures the density of the liquid before the yeast is added and after fermentation is complete and is used to determine the alcohol by volume of the final product. the May 15, 2014 in Kalispell, Montana. (Patrick Cote/Daily Inter Lake)</p>

May 19, 2014