Fermentis SafLager S-23

Fermentis SafLager S-23 is a dried lager yeast strain prized by home brewers for its clean, crisp fermentation profile and reliable performance across a range of lager styles. Selected for its bottom-fermenting characteristics, this strain was originally isolated from the Weihenstephan collection and has become a staple for brewers seeking classic German and Bohemian-style lagers without the complexity of managing liquid yeast cultures. Each sealed sachet contains active dried yeast cells that have been carefully dehydrated to preserve viability, allowing homebrewers to pitch directly without the need for elaborate starter preparations, though rehydration is recommended for optimal results.

Brewers working with SafLager S-23 can expect a fermentation character that produces well-balanced beers with subtle fruity esters and a clean malt backbone, making it particularly suited to pilsners, bocks, helles, and other traditional lager styles. The strain performs best within a fermentation temperature range of approximately 54 to 68 degrees Fahrenheit, and many brewers find that fermenting toward the cooler end of this spectrum yields the crispest, most neutral results typical of classic lagers, while slightly warmer temperatures can bring forward more noticeable ester production for those seeking a different flavor dimension. Its flocculation is moderate to high, which translates into good clarity in the finished beer and relatively straightforward cellaring or cold-conditioning afterward.

Packaged for convenience and shelf stability, SafLager S-23 comes in an 11.5-gram sachet that is nitrogen-flushed to protect yeast viability during storage, making it easy for home winemakers and brewers alike to keep extra packets on hand for future batches. Because it is a dried format, it offers a longer shelf life than liquid yeast alternatives and remains viable even without refrigeration for extended periods, though cold storage is recommended to maximize cell count and performance over time. This yeast has earned a loyal following among home brewing enthusiasts for its consistency, ease of use, and the authentic lager character it delivers batch after batch, making it a dependable choice for both newcomers experimenting with their first lager and experienced brewers refining their process.