<p>One option would be to pressurize the coffee in a keg with the gas that you choose.  In this case you would have the cold brew already made (or purchased).</p>

<p>This option requires about the same amount of equipment that a beer brewing setup requires.</p>

<ul>
<li>Ball-lock keg</li>
<li>Gas cylinder</li>
<li>Nitrogen tap (has higher pressure rating than standard tap)</li>
<li>Tubing/fitings/etc</li>
</ul>

<p>You pour the coffee into the keg and then pressurize with the gas of your choice.  Nitrogen provides the smooth, creamy mouthfeel.  I suspect N20 would  be even sweeter.  If you mixed in some cream you could use N20 as it is fat soluble and have a super decedent beverage.</p>

CC BY-SA 3.0
2017-03-21T19:42:01.653Z
2017-03-21T19:42:01.653Z
Lloyd Christmas
<p>I assume that it is possible. However, what will be the benefit? This is my opinion, but... We must try to drink coffee, not generate fancy chemical experiments.</p>

<p>Now, the objective part:</p>

<p>Pressurizing seems quite easy in room temperature. Depressurizing is quite problematic in a siphon. So, it will be a mess when you try to collect your brewed coffee. Or, requires fancy equipment or conditions.</p>

<p>In a siphon, you collect the brewed coffee very rapidly. However, in cold-brew methods, the aim is brewing in a very very long time to extract the floral notes. This, again, seems problematic in your proposal.</p>

<p>The main aim of siphon: you make infusion on top for desired amount of seconds, then, rapidly filter the infused coffee to the bottom layer. If you want to make <em>infused</em> cold brew, the easiest method is still again, going for a french press.</p>

CC BY-SA 3.0
2017-04-11T17:46:23.937Z
Thank you for your response. I enjoy drinking coffee a lot, and I'm also a scienist, so I'm totally fine with chemical experiments.

My plan is to brew the coffee first for 15 hours, etc., and then to use a siphon to push gas through it.
sodiumnitrate
CC BY-SA 3.0
2017-04-11T20:19:57.083Z
Why don't you just use a French-press in a cryostat?
MTSan
CC BY-SA 3.0
2017-04-12T20:50:16.030Z
I'm sorry if I'm asking a stupid question, but how would a French press help? Would it push air through the coffee?
sodiumnitrate
CC BY-SA 3.0
2017-04-14T12:52:52.377Z
Ah, sorry! Probably, I misunderstood all the way. I thought you are extracting the coffee to water. Where do you want to extract the coffee? To a liquefied gas? If this is the case, then, when no pressure exists, the solvent does not exists and you cannot drink it. (The extracts will probably remain such as instant coffee particles, I assume.) In that case, sure you need a closed container such as siphon. Still, I'm confused how you can drink it after extraction.
MTSan
CC BY-SA 3.0
2017-04-18T00:40:35.143Z
I'm extracting the coffee by doing a regular cold brew. 15 hours in cold water. Then, my idea was to push through N2O gas through it. Normally it should be N2 gas, I think, but I only have N2O capsules.
sodiumnitrate
CC BY-SA 3.0
2017-03-17T13:39:18.443Z
2017-03-17T13:39:18.443Z
MTSan
<p>I was wondering, would it be possible to just purchase cold brew coffee, and pressurize it in a siphon with N<sub>2</sub>O gas? As far as I know, one is supposed to use N<sub>2</sub> gas for nitro cold brew, but I wonder how it would taste with N<sub>2</sub>O instead. Has anyone attempted this before?</p>

CC BY-SA 4.0
2024-03-09T01:01:32.807Z
Been doing this a long time... usually use pure nitrogen, however, if you're adding any dairy into your coffee (think nitro latte), then using N2O will be your best bet. Enjoy experimenting!
brendo234
<cold-brew><siphon>
Is it possible to make nitro cold brew coffee with a siphon?
sodiumnitrate
# Is it possible to make nitro cold brew coffee with a siphon?

(Asked by: username_0 on 2017-03-16)

I was wondering, would it be possible to just purchase cold brew coffee, and pressurize it in a siphon with N2O gas? As far as I know, one is supposed to use N2 gas for nitro cold brew, but I wonder how it would taste with N2O instead. Has anyone attempted this before?

**Tags:** cold-brew, siphon

> **Comments:**
> **username_1**: Been doing this a long time... usually use pure nitrogen, however, if you're adding any dairy into your coffee (think nitro latte), then using N2O will be your best bet. Enjoy experimenting!  

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## 2 answers

### Answer by username_2 on 2017-03-21. Score: 1

One option would be to pressurize the coffee in a keg with the gas that you choose. In this case you would have the cold brew already made (or purchased).

This option requires about the same amount of equipment that a beer brewing setup requires.

* Ball-lock keg
* Gas cylinder
* Nitrogen tap (has higher pressure rating than standard tap)
* Tubing/fitings/etc

You pour the coffee into the keg and then pressurize with the gas of your choice. Nitrogen provides the smooth, creamy mouthfeel. I suspect N20 would be even sweeter. If you mixed in some cream you could use N20 as it is fat soluble and have a super decedent beverage.


---

### Answer by username_3 on 2017-03-17. Score: 1

I assume that it is possible. However, what will be the benefit? This is my opinion, but... We must try to drink coffee, not generate fancy chemical experiments.

Now, the objective part:

Pressurizing seems quite easy in room temperature. Depressurizing is quite problematic in a siphon. So, it will be a mess when you try to collect your brewed coffee. Or, requires fancy equipment or conditions.

In a siphon, you collect the brewed coffee very rapidly. However, in cold-brew methods, the aim is brewing in a very very long time to extract the floral notes. This, again, seems problematic in your proposal.

The main aim of siphon: you make infusion on top for desired amount of seconds, then, rapidly filter the infused coffee to the bottom layer. If you want to make *infused* cold brew, the easiest method is still again, going for a french press.

> **Comments:**
> **username_0**: Thank you for your response. I enjoy drinking coffee a lot, and I'm also a scienist, so I'm totally fine with chemical experiments.  My plan is to brew the coffee first for 15 hours, etc., and then to use a siphon to push gas through it.  
> **username_3**: Why don't you just use a French-press in a cryostat?  
> **username_0**: I'm sorry if I'm asking a stupid question, but how would a French press help? Would it push air through the coffee?  
> **username_3**: Ah, sorry! Probably, I misunderstood all the way. I thought you are extracting the coffee to water. Where do you want to extract the coffee? To a liquefied gas? If this is the case, then, when no pressure exists, the solvent does not exists and you cannot drink it. (The extracts will probably remain such as instant coffee particles, I assume.) In that case, sure you need a closed container such as siphon. Still, I'm confused how you can drink it after extraction.  
> **username_0**: I'm extracting the coffee by doing a regular cold brew. 15 hours in cold water. Then, my idea was to push through N2O gas through it. Normally it should be N2 gas, I think, but I only have N2O capsules.  

---

