We're proud to carry Bootleg Biology yeast & wild bugs for several reasons. First off, they're an open source yeast project! As homebrewers ourselves we love this shareable, DIY approach. The world of yeast & bacteria is still one we're exploring and has many uncharted species. The best way to explore is together! Secondly they have some amazing yeast & bacteria cultures that you can't find anywhere else! They've created a very diverse library of microbes. All microbes are sourced and isolated from “bootleg” sources such as: backyards, orchards, kombucha, yogurt, honey, fruit, bottle dregs, and whatever else the yeast wranglers can get their hands on.