Answers.Body: <p>There was a <a href="https://cooking.stackexchange.com/questions/1927/how-can-you-measure-the-caffeine-content-of-a-liquid-at-home">similar question</a> on the Cooking SE site. Perhaps you can try the approach suggested by Adam Shiemke in the accepted answer. He recommended using ethyl acetate and performing a little home science experiment as detailed <a href="http://www.scienceteacherprogram.org/chemistry/Paul00-2.html" rel="nofollow noreferrer">here</a>.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-12-03T20:59:51.070Z
Answers.LastActivityDate: 2014-12-03T20:59:51.070Z
Answers.LastEditDate: 2017-04-13T12:33:38.297Z
Answers.UserDisplayName: Alex A.
Body: <p>I recently got a winter sampler pack by Sierra Nevada, which had 3 Coffee Stout beers. I've also brewed my own coffee stout for early next year. I was wondering, having tried both, they both have a decent coffee taste, but is there any home science way to find the caffeine content of a coffee beer.</p>
  
  <p>FWIW my homebrew was "dry hopped" with 6 ounces of coffee grounds for two weeks, in a 5gal batch. Not sure if that can help with any calculations.</p>
  
  <p>Let me know if this is off topic, and I can move it to the homebrew SE, or even maybe the chemistry or cooking stack.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-12-03T20:51:58.843Z
Comments.Text: Do you have a [spectrophotometer](http://www.jenway.com/adminimages/A09_010A_Determination_of_Caffeine_in_Beverages_using_UV_Wavelength_Spectroscopy(1).pdf)?
Comments.UserDisplayName: Alex A.
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-12-09T13:41:32.603Z
Comments.Text: I suspect the alcohol content of the beer would throw off basic attempts to measure the caffeine.
Comments.UserDisplayName: Tom Brendlinger
Tags: <specialty-beers><stout>
Title: How to measure the caffeine content of a coffee beer at home?
UserDisplayName: CDspace
ThreadText: # How to measure the caffeine content of a coffee beer at home?
  
  (Asked by: username_0 on 2014-11-26)
  
  I recently got a winter sampler pack by Sierra Nevada, which had 3 Coffee Stout beers. I've also brewed my own coffee stout for early next year. I was wondering, having tried both, they both have a decent coffee taste, but is there any home science way to find the caffeine content of a coffee beer.
  
  FWIW my homebrew was "dry hopped" with 6 ounces of coffee grounds for two weeks, in a 5gal batch. Not sure if that can help with any calculations.
  
  Let me know if this is off topic, and I can move it to the homebrew SE, or even maybe the chemistry or cooking stack.
  
  **Tags:** specialty-beers, stout
  
  > **Comments:**
  > **username_1**: Do you have a [spectrophotometer](http://www.jenway.com/adminimages/A09_010A_Determination_of_Caffeine_in_Beverages_using_UV_Wavelength_Spectroscopy(1).pdf)?  
  > **username_2**: I suspect the alcohol content of the beer would throw off basic attempts to measure the caffeine.  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2014-12-03. Score: 4 | Accepted answer
  
  There was a [similar question](https://cooking.stackexchange.com/questions/1927/how-can-you-measure-the-caffeine-content-of-a-liquid-at-home) on the Cooking SE site. Perhaps you can try the approach suggested by Adam Shiemke in the accepted answer. He recommended using ethyl acetate and performing a little home science experiment as detailed [here](http://www.scienceteacherprogram.org/chemistry/Paul00-2.html).
  
  
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