Thanks for your experimentations! I enjoy studying coffee science and am trying to discover new ways of making cold brew in big batches for nitrogen infused coffee. Vacuum extraction was my first idea, with a vacuum environment having a low boiling point the extraction could speed up immensely but a vacuum chamber for a five gallon batch seemed like a lot of vapor the pump would have to work on to keep the vacuum going. Cavitation was next with pressure and quickly releasing the pressure but not much more than studying the process. During these experiments in my head oxidation became a primary concern both for taste and keeping everything fresh for extended periods. The thought that won out and now has lots of equipment is using a nitrogen generator to brew coffee in a 6.5 gallon keg under pressure of nitrogen, purging the oxygen from the air and water and the CO2 from the brewing process the keg is also slowly rotated during the brewing process and filtered afterwards then placed into kegs in a kegerator under pressure of nitrogen. I’ve been considering placing ultrasonic transducers (not sure of the frequency yet) onto the brewing keg but still need to master my keg brewing method first. Of course taste is the primary concern and I’m thinking an oxygen free brewing container is a good idea. Thought you’d like to read about my ideas, I’m kinda deep in the rabbit hole 😀
Hey Eric, Thanks for your comment and for sharing your ideas. I love a good coffee experiment. It sounds like you're putting a lot of thought and work into this and I'm excited to hear what you end up with. Sounds like a lot of fun. As for nitrogen brewing under pump pressure, you should check out Hardtank. They're a European brand that does something very similar. They have a smaller version that's available through Fetco called the Baby Hardtank. I don't think they're using any ultrasonics or acoustics in their design, however. As for your frequency usage, definitely test out different frequencies if you can - my theory is that different frequencies will extract specific solubles at different rates.
@stephenthorsteinsson by the way , I talked with one of the companies who made these devices They said the ultrasonic extracted more materials from the coffee. But I guess not in a way ppl used to it. Do u think our coffee taste cus of acceptance of the common taste ? Want new idea?
Interesting video! Watching you water your plants with a pouring kettle is 10/10 relatable. I believe the reason your chemex was clogging is just due to fines. Brew a French press, and then filter it through your chemex. Every time I do this I get crazy stalls. I believe it has something to do with how in a regular pour over the “correct size” coffee particles work to filter out the fines and microfines (Jonathan Gagne has written some about this). In addition, microfines have a tendency to stick to larger pieces. The ultrasonic bath may be working to dislodge the microfines making clogging in the chemex worse. Cant wait to see what’s next!
Thanks Andrew! Hahaha you know I really love it when one item has multiple uses. I think you're right. It could very well just be my grinder, but I do wonder if the cavitation bubbles are working to create ultrafines in the mix. To test that theory I want to purchase a transducer that outputs a lower frequency (for a larger, less destructive cavitation bubble) and see if that helps speed up the drawdown. I've heard about Jonathan Gagne and the Physics of Filter Coffee, but it wasn't until you mentioned their name that I'm realizing all the cool stuff they've written on their blog! I should definitely check this out. Thanks again for your comment!
Thank you, Eric! I got this shirt off of Zaful: www.zaful.com/search/?q=plaid-shirts-men&odr=hot They don't seem to make this particular shirt anymore, but there are many just like it. This one is made out of polyester, however - after wearing it for a few years I wished I had bought one in cotton. I usually wear a US M, this is a L off of their site.
This is interesting. I vaguely remember watching James' video on this. I think it's cool you dove deeper into it. I think a coffee UA-camr that would be interested in something like this would be Lance Hedrick. He seems to be someone that loves reading up on updated coffee science stuff. I also wonder if brewing with different water types may impact the results. Oh, and maybe filter through a thinner paper filter? I find Chemex filters to be much thicker than the usual V60 styles. Anyways, cool vid!!
Thank you, Waison! I agree, I think Lance would be a great pick. I didn't even think about it but you're probably on to something. Brewing with different water types may indeed have a huge impact since there's such an increase in solubility due to sonoporation. There may even be some sort of mineral necessary to this whole process that isn't regularly used in water for coffee. I'll experiment and also try out a thinner paper filter. Thanks for the suggestions!
@@stephenthorsteinsson if you do try these out, let us know! Or make an updated video! No idea what the real world application could be but I'll bet coffee comps will be a bit different with these diff ways of brewing.
Interesting rabbit hole to fall into. Thanks for the recommend!
Of course! Thank you for the comment!!
Thanks for your experimentations!
I enjoy studying coffee science and am trying to discover new ways of making cold brew in big batches for nitrogen infused coffee. Vacuum extraction was my first idea, with a vacuum environment having a low boiling point the extraction could speed up immensely but a vacuum chamber for a five gallon batch seemed like a lot of vapor the pump would have to work on to keep the vacuum going. Cavitation was next with pressure and quickly releasing the pressure but not much more than studying the process. During these experiments in my head oxidation became a primary concern both for taste and keeping everything fresh for extended periods. The thought that won out and now has lots of equipment is using a nitrogen generator to brew coffee in a 6.5 gallon keg under pressure of nitrogen, purging the oxygen from the air and water and the CO2 from the brewing process the keg is also slowly rotated during the brewing process and filtered afterwards then placed into kegs in a kegerator under pressure of nitrogen. I’ve been considering placing ultrasonic transducers (not sure of the frequency yet) onto the brewing keg but still need to master my keg brewing method first. Of course taste is the primary concern and I’m thinking an oxygen free brewing container is a good idea.
Thought you’d like to read about my ideas, I’m kinda deep in the rabbit hole 😀
Hey Eric,
Thanks for your comment and for sharing your ideas. I love a good coffee experiment. It sounds like you're putting a lot of thought and work into this and I'm excited to hear what you end up with. Sounds like a lot of fun.
As for nitrogen brewing under pump pressure, you should check out Hardtank. They're a European brand that does something very similar. They have a smaller version that's available through Fetco called the Baby Hardtank. I don't think they're using any ultrasonics or acoustics in their design, however.
As for your frequency usage, definitely test out different frequencies if you can - my theory is that different frequencies will extract specific solubles at different rates.
Thinking out of the box
And I like the care of technical details too
thank you! I appreciate your comment!
thank you! I appreciate that!
@stephenthorsteinsson by the way , I talked with one of the companies who made these devices
They said the ultrasonic extracted more materials from the coffee.
But I guess not in a way ppl used to it.
Do u think our coffee taste
cus of acceptance of the common taste ?
Want new idea?
Do centrifuge at lower rpm or use vacuum filtering, heck use the aero press to filter.
had an aeropress on hand and that worked well!
Interesting video!
Watching you water your plants with a pouring kettle is 10/10 relatable.
I believe the reason your chemex was clogging is just due to fines. Brew a French press, and then filter it through your chemex. Every time I do this I get crazy stalls. I believe it has something to do with how in a regular pour over the “correct size” coffee particles work to filter out the fines and microfines (Jonathan Gagne has written some about this).
In addition, microfines have a tendency to stick to larger pieces. The ultrasonic bath may be working to dislodge the microfines making clogging in the chemex worse.
Cant wait to see what’s next!
Thanks Andrew!
Hahaha you know I really love it when one item has multiple uses.
I think you're right. It could very well just be my grinder, but I do wonder if the cavitation bubbles are working to create ultrafines in the mix. To test that theory I want to purchase a transducer that outputs a lower frequency (for a larger, less destructive cavitation bubble) and see if that helps speed up the drawdown.
I've heard about Jonathan Gagne and the Physics of Filter Coffee, but it wasn't until you mentioned their name that I'm realizing all the cool stuff they've written on their blog! I should definitely check this out.
Thanks again for your comment!
Sound is ass, but the editing and content is on point 😂
it’s true, hahahaha. thanks! 🙏
you should get yourself a microphone
this. this is true. every time I make a video I think this. I apologize for the rough audio and will do better next time!
Oh man, where did you get that plaid shirt? That is amazing. And thanks for sharing this funky method!
Thank you, Eric!
I got this shirt off of Zaful: www.zaful.com/search/?q=plaid-shirts-men&odr=hot
They don't seem to make this particular shirt anymore, but there are many just like it. This one is made out of polyester, however - after wearing it for a few years I wished I had bought one in cotton. I usually wear a US M, this is a L off of their site.
@@stephenthorsteinsson Thanks!
This is interesting. I vaguely remember watching James' video on this. I think it's cool you dove deeper into it. I think a coffee UA-camr that would be interested in something like this would be Lance Hedrick. He seems to be someone that loves reading up on updated coffee science stuff. I also wonder if brewing with different water types may impact the results. Oh, and maybe filter through a thinner paper filter? I find Chemex filters to be much thicker than the usual V60 styles. Anyways, cool vid!!
Thank you, Waison! I agree, I think Lance would be a great pick. I didn't even think about it but you're probably on to something. Brewing with different water types may indeed have a huge impact since there's such an increase in solubility due to sonoporation. There may even be some sort of mineral necessary to this whole process that isn't regularly used in water for coffee. I'll experiment and also try out a thinner paper filter. Thanks for the suggestions!
@@stephenthorsteinsson if you do try these out, let us know! Or make an updated video! No idea what the real world application could be but I'll bet coffee comps will be a bit different with these diff ways of brewing.
Absolutely. There's definitely more to come!
interesting!
Glad you think so! Thanks for watching!
You want to use an ultrasonic homogenizer for best results in flavour extraction.
ua-cam.com/users/results?search_query=ultrasonic+homogenizer
Absolutely. It’d be cool to partner with a local lab in exchange for some coffee.
Those are 2k plus dollars for the cheapest ones haha