20
votes
Cold brew coffee in three minutes using acoustic cavitation
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- Title
- Hear that? That's the sound of an ultrasonic cold brew coffee ready in under three minutes
- Word count
- 408 words
What kind of energy is required for this kind of procedure? I assume that it isn't crazy amounts of energy required because things like ultrasonic jewelry cleaners exist as consumer products.
They used a 100-W ultrasonic transducer for the ultrasonication.
Original paper is open access
Ultrasonicator used
Someone electronics-inclined could probably do something similar..
100W? This is going to be a product. Yay!
From the article, it sounds like they want to use the tech to make (at least on the consumer side of things) a keurig-like machine.
If you don't want to wait a few years for the technology to mature, you can get faster cold brew today using sous vide or a vacuum chamber
Or just put it in the fridge overnight. Making cold brew isn't hard. This would only be useful really for businesses. Which is fine, businesses are a perfectly lucrative market.
I wouldn’t buy an expensive machine for it, but I’m pretty lazy about making it early enough to be ready in the morning so I do see the appeal
Yeah. Admittedly one of the main perks of cold brew is it's dead simple to do. But supposedly cutting down on the brewing time "improves" the flavor
I guess I just don't understand the advantage over... non-cold brew. Cold brew is preferred by some because it mellows out all the flavors of the coffee, which is why it's good for low-quality or stale coffee but why most coffee aficionados will opt for iced non-cold brew coffee for their fancy beans. What does this bring to the table that you can't get with a V60 over ice?
I'm not an aficionado, I just prefer cold brew at home and espresso drinks when I get them hot from a coffee shop. But overnight coffee-making works for me. I don't really like brewed coffee that much regardless of its quality. (or perhaps I've only had cheap coffee, I don't really know)
Everyone has their preferences. Using a different method for brewing coffee is going to have different results.
You may prefer the V60 over ice, and others might prefer the quick cold-brew. And some might prefer a more traditional cold-brew over either. That's why I put "improves" in quotes in my other comment.
It just tastes different. You’re not wrong that most third wave coffee people prefer a normal pourover, but no one would disagree that cold brew tastes nothing like a traditional brew, for better or for worse.
So what does this get that a v60 over ice doesn’t? Well, one is time - in most of the west it’s not economical for most coffee shops to make pour overs.
But also, it just tastes completely different!
And people who like cold brew are a market like any other. If someone has money and wants to exchange it for a product, who are you to say no?
Oh I agree cold brew tastes totally different -- I enjoy both cold brew and other methods of brewing -- but the fact that the time is part of why makes me wonder if this method actually tastes like cold brew. If it tastes less like cold brew, that seems to make it a weird alternative to a normal iced coffee.
If it does taste just like traditional cold brew, I guess it's selling itself on convenience. Personally I think making a big batch of cold brew overnight is already pretty low-effort compared to most other brewing methods, so it's a high bar to clear to make it more convenient than that. But ig we'll see if this ever goes to market.
Per the article, the paper did blind taste tastes, and it does seem to taste like coldbrew.
Ah fair enough then. I still think they have their work cut out for them in making it more convenient than just making coldbrew normally, though.