More
"Weyermann® acidulated malt is soured with naturally occurring lactic acid that they propagate from wort, following the German Purity Law, which states beer can only be produced using water, barley, and hops. Although exact details of the acidulation process remain undisclosed, the process is similar to the production of other malts. They use a pale barely malt that is steeped, germinated, kilned, and acidulated."
https://funkwerks.bl...lated-malt.html