Saccharomyces Pastorianus v/s Saccharomyces cerevisiae - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Saccharomyces Pastorianus v/s Saccharomyces cerevisiae

Thread Tools
Old 09-24-2011, 03:56 AM   #1
Sep 2011
cambridge, ma
Posts: 1

I want to brew a lager that requires Saccharomyces Pastorianus and a homebrew shop offered me Saflager W34/70. I read online that Saccharomyces carlsbergensis, which is the old name for what is known as Saccharomyces pastorianus, is a hybrid of either Saccharomyces bayanus or Saccharomyces eubayanus, and Saccharomyces cerevisiae.

When I search online for Saflager W 34/70, I found that it is just pure Saccharomyces cerevisiae.

I want to brew a beer called Foggy Bottom Lager by Old Heurich, which specifically calls for Saccharomyces pastorianus. Because I quite like the taste, I want to get the exact yeast.

Should I buy the Saflager W 34/70 or keep looking for the S. Pastorianus?

Thank you!

Reply With Quote
Old 09-24-2011, 01:08 PM   #2
Nateo's Avatar
Jul 2010
Bennett Springs, MO
Posts: 2,050
Liked 41 Times on 32 Posts

I've never heard of a yeast specifically marketed as S. pastorianus, even though that's what all lager yeasts probably are.

Even within the S. pastorianus there are lots of different strains, so without knowing more about that beer you want to make, it's impossible to find a yeast that's an exact match.

This would be a good question to post in the "yeast and fermentation" subforum on here.
To paraphrase Dr. England - "Off-flavors smooth with time. So do mountains. Brew it right from the start!"

My blogsite:

Reply With Quote
Old 09-24-2011, 02:04 PM   #3
ArcaneXor's Avatar
Nov 2007
Posts: 4,573
Liked 118 Times on 105 Posts

It's an Oktoberfest-style beer if I am not mistaken. I'd start your quest with an Oktoberfest yeast, like WLP 820.

Reply With Quote
Old 09-24-2011, 02:15 PM   #4
Feb 2010
conway SC., South Carolina
Posts: 1,941
Liked 24 Times on 24 Posts

from what i could find thats just a broad name for lager yeast. if its an oktoberfest beer, then i would go with what arcaneXor is suggesting.
Originally Posted by mrk00k View Post
I'm getting ingredients in the mail today, and I can't even taste my beer yet. What should I do?
Originally Posted by jsweet View Post
I would make a yeast starter, and pitch it into your mailbox.

Reply With Quote
Old 09-24-2011, 04:24 PM   #5
944play's Avatar
Jul 2008
Santa Rosa, CA
Posts: 2,726
Liked 46 Times on 41 Posts

W-34/70 is most definitely a lager yeast, and possibly the best dry lager yeast available to homebrewers, but it's NOT my favorite. It and its close equivalents in liquid form seem to me to be slow, non-flocculent, and diacetyl-prone, especially compared to Wyeast 2308.

34/70 has some advantage in attenuation, though, if that's important to you.
OD: ?
Keg: Simple AIPA (2-row, Chinook, Cascade, WLP090)

Reply With Quote
Thread Tools

Forum Jump