House Yeast. What does it mean? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > General Beer Discussion > House Yeast. What does it mean?

Reply
 
Thread Tools
Old 04-20-2010, 12:47 AM   #1
commonlaw
Recipes 
 
Sep 2009
culver city
Posts: 180
Liked 1 Times on 1 Posts



When a brewery says they use a "house" or "proprietary" strain of yeast, what exactly does that mean? Do they get custom "blends" from White Labs or Wyeast different from what is available to homebrewers? I assume it is not just how a yeast changes over generations of use, since I think most breweries go back to a pure strain after some number of batches. Anyway, just curious.

 
Reply With Quote
Old 04-20-2010, 01:00 AM   #2
volstag
Recipes 
 
May 2009
Santa Rosa, CA
Posts: 36
Liked 1 Times on 1 Posts


my understanding is that they use one type of yeast for all (or most) of their brews, often it is a strain that is available to us homebrewers. Many commercial breweries get their yeast from white labs or wyeast as well.

 
Reply With Quote
Old 04-20-2010, 01:08 AM   #3
remilard
Recipes 
 
Nov 2008
Kansas City
Posts: 3,654
Liked 43 Times on 41 Posts


"house" just means the yeast they use, it might be from white labs, wyeast, wehenstephan, fermentis etc or it might not. Proprietary means it is their intellectual property. Pacman is proprietary but Wyeast maintains the culture as a service to Rogue and Rogue allows them to market it to homebrewers. Some breweries, generally large ones, maintain their own culture (maybe with a backup at a local hospital in cryogenic storage with redundant power back up).

A lot of breweries will tell you what yeast they use if it is a stock strain from a vendor. If it isn't they should at least tell you if you can culture it from a bottle (ie it is bottled with the primary strain, not pasteurized and not sterile filtered). Some breweries, usually small ones or pubs, will give you a growler full of yeast if you ask nice and swing buy while they are brewing.

 
Reply With Quote
Old 04-20-2010, 02:28 AM   #4
commonlaw
Recipes 
 
Sep 2009
culver city
Posts: 180
Liked 1 Times on 1 Posts


How are the proprietary strains developed? For example, how did Rogue happen upon Pacman? Just trying to get an idea of how these proprietary strains are developed.

Interesting to note the marketing of using the phrase "house yeast"--it may be the exact same yeast we are dumping in our beers, but it sounds special.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Anderson Valley House Yeast Almighty Fermentation & Yeast 8 02-24-2010 12:06 AM
Pitching Yeast Slurry - New House Yeast? hoppysailor All Grain & Partial Mash Brewing 4 10-14-2009 04:25 PM
House Yeast daveooph131 Beginners Beer Brewing Forum 5 10-08-2009 10:58 AM
House Yeast Compliment to Pacman weremichael Fermentation & Yeast 5 08-11-2009 07:35 PM
Similar yeast to that of Brewery Ommegang's house yeast? dsuarez Recipes/Ingredients 5 05-04-2009 04:13 AM


Forum Jump