https://www.homebrewtalk.com/forum/threads/training-wheels-berliner-good-intro-to-sours.579458/

1) Use the Bavarian Wheat DME to make a 100g/1L starter for the Omega lacto blend 24-48 hours before brewday. No stir plate, put on an airlock and just leave it alone. Anywhere between 70-90f is fine.

2) Brewday - heat 6gal water to 200f, add DME and stir until its all dissolved. Thats it! Cool the batch down to 90f, rack to fermenter and pitch 1L lacto starter.

*Very Important - you need to be very careful not to oxygenate the wort or this could ruin the beer. To limit oxygen exposure use a smaller fermenter, or up the batch size, so that the fermenter is filled completely full leaving only about an inch of headspace between the wort and airlock. OYL605 doesn't krausen so don't be worried.

3) Leave fermenter in the 70-90f range for 24-72 hours, depending on how sour a beer you want. You can do this to taste if you'd like. Once sourness has been achieved, rack back to the kettle and pasteurize for 30mins at 180f.

4) Cool, pitch plenty of healthy yeast, and proceed like any other beer. At this point you can oxygenate the wort before pitching your yeast if you'd like. Thats all there is to it you'll shortly have an easy going Berliner to drink!!