 Surplus cornelius kegs which are obsolete from the soft-drink industry have been adopted by home brewers as an efficient alternative to bottling, as the kegs are easier to fill, clean and maintain than industry-standard beer kegs.They are one of the most versatile systems for the home-brewer.In addition to this, most home brewers must bottle their beer by hand, which is a tedious chore for a large batch held in a single keg fill.