[jeffy]

https://news.ncsu.edu/2015/09/beer-2015/

This is a short article about making beer with wild yeast found on insects.

[hopfenundmalz]

There are 2 different groups I know of isolating wild yeast from trees. This is unique, and I was intrigued with the sour producing yeast. We live in interesting times for brewing.

[reverseapachemaster]

The yeast that supposedly developed a sour beer is suspect. It could have been an impure colony that included LAB or other acid producing bacteria.

[ynotbrusum]

The yeast that supposedly developed a sour beer is suspect. It could have been an impure colony that included LAB or other acid producing bacteria.

You could be right, but this is a microbiology lab at an accredited university, so when they say that they isolated a strain, they probably did so and worked under relatively pure lab conditions.  Just look at what Brett can do in terms of "souring" - the real issue to me is who evaluated the beer and how was it evaluated?  Sour in what way?  What was the pH? And, of course, where can I get this yeast?