Continuing our series on factors (including grains and hops) that contribute to the higher cost of craft beers, let's take a look at yeast. There are many types of yeast that can be used in brewing. Oftentimes, a brewer will use more than one yeast in a particular brew. For instance, a lot of the sour beers that have become more popular in the marketplace use multiple strains.
Obviously, the more specialty yeasts or variety of types a brewer uses, the higher the cost of the product. A corresponding lessening of cost is associated with fewer yeast strains. Our macro brewing friends mostly use one consistent lager strain, so there is lesser cost for those who use this one strain. Micro brewers, on the other hand, make a variety of styles, include multiple strain styles in a beer, and some even use fresh yeast to bottle carbonate/condition their beer (again, this is extra money for the brewer).
So, where does all this yeast come from? Large brewers are able to purchase lab equipment, propagating equipment, and storage space for yeast specimens, which they keep in house. Their ability to do this pays the expensive equipment off over the course of time. They ...