Long Life Yeast produces many different kinds of yeast. Some are genetically altered to produce ethanol and biological enzymes for medical purposes, while others are simply for baking, brewing, or use as a nutritional supplement. LLY’s main selling point, however, is foods made with Kluyveromyces marxianus var. marxianus and Saccharomyces unisporus yeast strains. These strains act as prebiotics, food for good intestinal bacteria, and have immune boosting properties. The client wanted the design to invoke a sense of health and wellbeing, as these products are aimed at health conscience consumers.