Brewing much studied, the preservative nature of the soft resins is not yet fully understood, though it has been observed that unless stored at a cool temperature, the preservative nature will decrease. Brewing is the sole major commercial use of hops. Yeast is the microorganism that is responsible for fermentation in beer. Yeast metabolises the sugars extracted from grains, which produces alcohol and carbon dioxide, and thereby turns wort into beer. In addition to fermenting the beer, yeast influences the character and flavour. The dominant types of yeast used to make beer are "Saccharomyces cerevisiae", known as ale yeast, and "Saccharomyces
Two Brothers Brewing Two Brothers Brewing Two Brothers Brewing Company is an independently owned Illinois-based microbrewery founded by brothers Jim and Jason Ebel in 1996. The brothers brought their knowledge of different brewing styles to the Chicago craft brew market after living in Europe and experiencing the variety of beers available there. Jim and Jason started the business using bulk milk tanks converted into fermenters that were donated to them by their grandfather who was a retired dairy farmer. Two Brothers Brewing has now been in business for over 20 years and has opened multiple locations throughout the Chicago metropolitan area, as well