The sour mash technique promotes ideal conditions for yeast to showcase its best flavor contributions. It is not new to the industry and many brands use this technique, but Old Elk is not afraid to do things with a twist by redefining what sour mash means to them. The Sour Mash Reserve is a lot-oriented expression using the familiar technique of sour mash, with an exceptional strain of yeast to create a liquid and flavor profile that will vary with each batch release.