A Lactobacillus brevis and plantarum blend that is clean and reliable with a wide temperature range. The plantarum, isolated in collaboration with Marz Community Brewing, sours efficiently at lower temperatures. Maximum souring develops typically within 48 hours with no need to hold high temperatures as it is efficient at the lower end of its range. Note also that the blend is extremely hop sensitive, so make sure to add only to unhopped wort.