The brine from fermented foods is a rich source of lactate and other metabolites and is being studied for its effects on the mucosal immune system.

“The brine, just a tangent here for a second, that was actually one of the products that we had people use in the fermented food phase. There's actually a product called Gut Shots, which is just bring that they've marketed. We actually are now studying it in the lab. I just actually, before this came from a lab meeting where a GI fellow in my lab is actually putting Gut Shots, sterilized gut microbe, or the fermentation microbes removed or present into mice and looking at changes in their mucosal immune system. So we're studying this in detail now, because it's a rich source of lactate and a bunch of other interesting metabolites.”