Saccharomyces pastorianus, or Saccharomyces carlsbergensis: Lager yeast, slower fermentation, performs well at cold temperatures, creates a cleaner beer profile. Saccharomyces cerevisiae: Ale ...

If it doesn't come from a brewery in the Köln region in Germany, it's likely a Kölsch-style beer, rather than a true Kölsch.

All beer styles belong to either the ale yeast family or the lager one, and the latter definitely conquered the market. Approximately 90% of beers consumed globally are made with lager yeast.

The team believes that it was actually the top-fermenting ale yeast S. cerevisiae that contaminated a batch of beer brewed with the cold-tolerant S. eubayanus.

Ale yeast, by nature, ferments at a warmer temperature than lager yeast, and so is typically kept in tanks heated to a minimum of 60 degrees F during that all-important fermentation.

ABV: 7.7% Average Price: $12 for a four-pack The Beer: This year-round favorite from the iconic Brewery Ommegang is brewed with Pilsner malt, flaked corn, and ale yeast. It gets its floral kick ...

At its most basic, kölsch is a German beers that's like a mash-up of an ale and lager. It's made with ale yeast but, like a lager, it's top-fermented—meaning yeast accumulates on the top of the ...

Learn about the difference between ale and lager beers, both of which are made using malt, hops, water, and yeast. The type of yeast used during fermentation sets ales and lagers apart.