Yogurt beer...looks interesting

[lordstilton]

http://www.notsoprofessionalbeer.com/2013/09/brewing-with-yogurt.html

[Eoin]

You can make Kefir beer also but it has a short window before it turns totally sour.

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[lordstilton]

With this method you sour the beer before the boil so there is no bacterial in it to continue to sour it

[mr hoppy]

Ron P had a blog post about historic beers from north Germany fermented with lacto from yogurt.

I've heard of people using priobiotics for this on US boards.

[imark]

So who's going to man up and do this as an experiment then?

[mr hoppy]

I used WLP 677 (White Labs lacto culture) in a gose last year.

I made a starter in 3 litres of wort - last July during the warm spell - and incubated them as warm as I could.

I put the starter in a cardboard box lined on the inside within polystyrene and tinfoil. I cut a hole in the roof and put a desk lamp on top and I put a black material cover over the starter.

Excellent thread here, talks about this, and sour mashes and yoghurt cultures:
http://forum.northernbrewer.com/viewtopic.php?t=43587