Answers.Body: <p>The fact that both Humulus lupulus (hops) and Cannabis sativa (marijuana) have similar organoleptic properties (taste and smell) could indicate a common ancestry--but it isn't proof. Lots of plants make similar aroma molecules, known as terpenes and terpenoid compounds, including lemons (which make limonene), lavender (linalool) and conifers (pinene) -- but none of them are closely related to cannabis or hops.</p>
  
  <p><a href="http://www.popsci.com/science/article/2012-11/beersci-marijuana-related-hops">Full article here</a></p>
  
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Answers.Text: @Grohlier much closer than that even. Think dogs and wolves, not humans and apes.
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Answers.Text: In which case - why don't more beers smell like cannabis?
Answers.UserDisplayName: dwjohnston
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Answers.Text: Because most of the aroma is stripped out in the brewing process, unless it's actively pushed back in through dry hopping.
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Answers.Text: They do in fact have a common ancestry.  Both are, they are both member of the [Cannabaceae family](http://en.wikipedia.org/wiki/Cannabaceae).
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Answers.Text: I think it is kind of like Humans and Apes are both primates. I agree they have that ancestry; but that small percent variability makes a world of difference.
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Answers.Body: <p>The 'dank' scent you're experiencing is the smell of Hops - among the closest botanical neighbors to the Marijuana plant and a key ingredient of beer. The two plants both look and smell nearly identical. Specifically, the dank, resiny scent you pick up from a very hoppy brew is the smell of so-called "Alpha Acids" -  which are chemically a part of the same family as THC, the active ingredient in Marijuana.</p>
  
  <p>As to why some beers are, well, dank, and others aren't? It's a factor of the highly variable alpha acid content in different <a href="https://alcohol.stackexchange.com/questions/138/does-the-climate-and-growing-conditions-of-hops-effect-the-taste-of-a-beer-like/145#145">hop varietals</a>, as well as a question of <a href="https://alcohol.stackexchange.com/questions/127/dry-hopping-versus-regular-hopping">process</a>. Most of the aromatic alpha acids in hops boil off or dissolve as part of the normal fermentation process, however, some brewers 'dry hop' their beer -  adding additional hops at the end of the process, with the explicit purpose of enhancing the aromatic qualities of the beer.</p>
  
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Answers.Text: actually the plants are close enough that one can be grafted onto the other.
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Body: <p>In my experience, some beers smell like cannabis. Stella Artios is a distinctive example. </p>
  
  <p>What causes this? - Is it due to a type of hop, or a style? </p>
  
Tags: <aroma>
Title: Why do some beers smell like cannabis?
UserDisplayName: dwjohnston
ThreadText: # Why do some beers smell like cannabis?
  
  (Asked by: username_0 on 2014-01-22)
  
  In my experience, some beers smell like cannabis. Stella Artios is a distinctive example.
  
  What causes this? - Is it due to a type of hop, or a style?
  
  **Tags:** aroma
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2014-01-22. Score: 11
  
  The fact that both Humulus lupulus (hops) and Cannabis sativa (marijuana) have similar organoleptic properties (taste and smell) could indicate a common ancestry--but it isn't proof. Lots of plants make similar aroma molecules, known as terpenes and terpenoid compounds, including lemons (which make limonene), lavender (linalool) and conifers (pinene) -- but none of them are closely related to cannabis or hops.
  
  [Full article here](http://www.popsci.com/science/article/2012-11/beersci-marijuana-related-hops)
  
  > **Comments:**
  > **username_0**: In which case - why don't more beers smell like cannabis?  
  > **username_2**: Because most of the aroma is stripped out in the brewing process, unless it's actively pushed back in through dry hopping.  
  > **username_3**: They do in fact have a common ancestry.  Both are, they are both member of the [Cannabaceae family](http://en.wikipedia.org/wiki/Cannabaceae).  
  > **username_1**: I think it is kind of like Humans and Apes are both primates. I agree they have that ancestry; but that small percent variability makes a world of difference.  
  > **username_2**: @Grohlier much closer than that even. Think dogs and wolves, not humans and apes.  
  
  ---
  
  ### Answer by username_2 on 2014-01-22. Score: 7
  
  The 'dank' scent you're experiencing is the smell of Hops - among the closest botanical neighbors to the Marijuana plant and a key ingredient of beer. The two plants both look and smell nearly identical. Specifically, the dank, resiny scent you pick up from a very hoppy brew is the smell of so-called "Alpha Acids" - which are chemically a part of the same family as THC, the active ingredient in Marijuana.
  
  As to why some beers are, well, dank, and others aren't? It's a factor of the highly variable alpha acid content in different [hop varietals](https://alcohol.stackexchange.com/questions/138/does-the-climate-and-growing-conditions-of-hops-effect-the-taste-of-a-beer-like/145#145), as well as a question of [process](https://alcohol.stackexchange.com/questions/127/dry-hopping-versus-regular-hopping). Most of the aromatic alpha acids in hops boil off or dissolve as part of the normal fermentation process, however, some brewers 'dry hop' their beer - adding additional hops at the end of the process, with the explicit purpose of enhancing the aromatic qualities of the beer.
  
  > **Comments:**
  > **username_4**: actually the plants are close enough that one can be grafted onto the other.  
  
  ---
  
  