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#multistrain #kveik #summer #fermentation #temperaturetolerance For many brewers, summer brewing brings a predictable challenge: maintaining fermentation stability in rising ambient temperatures. Standard brewing strains—like Saccharomyces cerevisiae  and Saccharomyces pastorianus —have relatively defined temperature windows. Push them too far, and you risk stalling, off-flavors, or outright fermentation failure. But not all yeasts respond to heat the same way. Multi-strain K