Answers.Body: <p>By the time you open your beer the yeast has mostly exhausted itself by converting the sugars into alcohol.</p>
  <p>You may be able to use it to kick start a sourdough starter, or grow it back to an active bacteria, but it will not be able to leaven a batch of bread by itself from the bottle.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-12-28T18:00:14.793Z
Answers.LastActivityDate: 2020-12-28T18:00:14.793Z
Answers.UserDisplayName: Alaska Man
Answers.Body: <p>I'm not a bread baker, but I believe that the yeast in beer (what little might be there) is different from yeast used for baking and isn't active in the baking process. However the carbonation in beer might impact the texture or rise of the bread. For this reason flat beer might act differently than freshly opened beer.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-05-03T04:24:41.303Z
Answers.Text: Baking typically uses slightly different strains, but the same species. Historically a lot of bakeries used to source their yeast from nearby breweries though, so brewers yeast strains can definitely be used for baking.
Answers.UserDisplayName: Jack
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-01-01T17:55:16.673Z
Answers.LastActivityDate: 2021-01-01T17:55:16.673Z
Answers.UserDisplayName: Eric S
Body: <p>Does the yeast in beer weaken when the beer is flat? I use the beer in making bread, and, since I don't drink, it sits in the fridge until I bake bread again.  I'm curious whether the yeast weakens in flat beer.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-12-28T17:55:52.457Z
Comments.Text: Unless it’s a bottle conditioned beer, I don’t think it’ll have any active yeast.
Comments.UserDisplayName: Eric S
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-12-28T17:57:56.487Z
Comments.Text: This link might be related: https://cooking.stackexchange.com/questions/55675/can-you-make-bread-with-the-yeast-in-beer
Comments.UserDisplayName: Eric S
Tags: <temperature><yeast>
Title: Does the yeast weaken in flat beer?
UserDisplayName: O.K.
ThreadText: # Does the yeast weaken in flat beer?
  
  (Asked by: username_0 on 2020-12-28)
  
  Does the yeast in beer weaken when the beer is flat? I use the beer in making bread, and, since I don't drink, it sits in the fridge until I bake bread again. I'm curious whether the yeast weakens in flat beer.
  
  **Tags:** temperature, yeast
  
  > **Comments:**
  > **username_1**: Unless it’s a bottle conditioned beer, I don’t think it’ll have any active yeast.  
  > **username_1**: This link might be related: https://cooking.stackexchange.com/questions/55675/can-you-make-bread-with-the-yeast-in-beer  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2020-12-28. Score: 4
  
  By the time you open your beer the yeast has mostly exhausted itself by converting the sugars into alcohol.
  
  You may be able to use it to kick start a sourdough starter, or grow it back to an active bacteria, but it will not be able to leaven a batch of bread by itself from the bottle.
  
  
  ---
  
  ### Answer by username_1 on 2021-01-01. Score: 1
  
  I'm not a bread baker, but I believe that the yeast in beer (what little might be there) is different from yeast used for baking and isn't active in the baking process. However the carbonation in beer might impact the texture or rise of the bread. For this reason flat beer might act differently than freshly opened beer.
  
  > **Comments:**
  > **username_3**: Baking typically uses slightly different strains, but the same species. Historically a lot of bakeries used to source their yeast from nearby breweries though, so brewers yeast strains can definitely be used for baking.  
  
  ---
  
  