Originally Posted by ShawnNelson
Did anyone ever figure out if the yeast in the dregs of Sierra Nevada Kellerweiss is the primary fermenting yeast?
Using a separate "bottling" yeast is an exceedingly rare practice, yet your question is extremely common in this thread. The truth is, it's almost always a safe bet that the yeast in the bottle was used to ferment the beer itself, especially in beers that aren't extreme-ABV beers (like 13+ percent).
In fact, it's so unlikely to be a different strain in any given beer that you're always best off just going for it, unless you've heard otherwise either straight from the horse's mouth, or from so many other people that it's obviously common knowledge. It's so unlikely that if somebody tells you that a certain beer uses a different strain for bottling, there's a high probability that they're wrong, because many homebrewers have the mistaken idea that it's a somewhat common practice. It really isn't. MANY (if not most) brewers who ROUTINELY harvest yeast will *never* encounter such a product.