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Cold brew coffee in 3 minutes using acoustic cavitation

unsw.edu.au

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Re: Cold brew coffee in 3 minutes using acoustic cavitation

#241

Post by dc96 »

ChrisMarshallNY wrote: post #240
solardev wrote: post #225

Earlier quoted context omitted.

This is why I love my fully automated luxury mediocre espresso maker ( https://www.seattlecoffeegear.com/blogs/scg-blog/jura-a1-rev... ). I push a button, it grinds the coffee and does stuff inside that I can't see, then moments later I have a perfectly average cup of something resembling burnt bean soup. I don't know whether it's megasonically brewed or absolute-zero infused or just wet caffeine pills. Sometimes it'…

Friend of mine, with money , has a coffee machine, by a company I’d never heard of, called “Jura”[0]. I’d not heard of it, because it’s not for plebes, like me. Grinds and brews a perfect cuppa in about a minute. I used to have a toddy maker, where you dumped a whole pound of ground coffee into a bucket of water, let it sit overnight, in the fridge, then you drained through a filter. The resulting thick liquid was li…

Looks like the comment you replied to links to a Jura as well

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#242

Post by senderista »

Our espresso machine has been on the fritz for a while, but I barely miss it after discovering that a few oz. of TJ's cold brew with a splash of milk in the microwave for 30s is practically as good. I think warmed-up cold brew is one of my favorite life hacks.

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#243

Post by solardev »

ChrisMarshallNY wrote: post #240
solardev wrote: post #225

Earlier quoted context omitted.

This is why I love my fully automated luxury mediocre espresso maker ( https://www.seattlecoffeegear.com/blogs/scg-blog/jura-a1-rev... ). I push a button, it grinds the coffee and does stuff inside that I can't see, then moments later I have a perfectly average cup of something resembling burnt bean soup. I don't know whether it's megasonically brewed or absolute-zero infused or just wet caffeine pills. Sometimes it'…

Friend of mine, with money , has a coffee machine, by a company I’d never heard of, called “Jura”[0]. I’d not heard of it, because it’s not for plebes, like me. Grinds and brews a perfect cuppa in about a minute. I used to have a toddy maker, where you dumped a whole pound of ground coffee into a bucket of water, let it sit overnight, in the fridge, then you drained through a filter. The resulting thick liquid was li…

That's actually the brand I have, and I'm as plebe-y as they come! I even have a mining pick in my garage that I use for manual labor. I'm nothing like the guy in the photo, more like the guy who makes the coffee for the guy who makes HIS coffee.

You can get Juras for pretty cheap if you go bargain hunting. There are also other similar but cheaper brands. As a category, they're called "superautomatic espresso machines". I don't know why they're not more popular, but it's been a total game-changer for me.

I got my Jura A1 (their discontinued base model) used, third-hand re-refurbished, a decade ago for like $700. A chunk of change upfront to be sure, but since then it's consistently made like 4-8 shots of espresso a day, every day. If reliable mediocrity were a virtue, this thing would be the patron saint of saints. And if a cup of store coffee were $5 (which is cheap nowadays), the machine pays for itself in 3-5 months. Best purchase I ever made.

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#244

Post by senderista »

NoGravitas wrote: post #123
dahart wrote: post #40

Earlier quoted context omitted.

> brew temp and serving temp are orthogonal Yes!!! I’m biting my tongue a little on how infuriating the process has been to ask cafes for warmed cold brews, but you’re spot on and exactly right. I’m baffled that so many people who sell coffee for a living, think they know a lot about it, and act like coffee snobs, don’t seem to understand what cold brew even is. (Or, in a few cases in my sampling I’m certain it was w…

> I’m baffled that so many people who sell coffee for a living, think they know a lot about it, and act like coffee snobs, don’t seem to understand what cold brew even is. Light roasts came (back?) into style among coffee snobs a few years ago because it highlights the difference between different sources/regions/whatever. Ever since then, the former best coffee shop in my town has been exclusively producing sour, ve…

Agreed, many supposedly good coffee shops in the Seattle area (e.g. Trabant) produce espresso that is way too sour for my taste. (If you want a point of reference, IMO Espresso Vivace does it perfectly.)

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#245

Post by enjeyw »

solardev wrote: post #238
taylorportman wrote: post #229

Earlier quoted context omitted.

Your ambivalence contributes little to the conversation.

Wait till you see my cookbook, "1-minute Meal Replacement Powders", the perfect complement to my self-help/self-sabotage title, "Better Living Through Lower Standards". YOLO, and no one gets it right on the first try anyway...

Are you offering shares in your venture? I’d be mildly interested in investing on the expectation that I’d see returns that are slightly worse than inflation.

Not that interested though, so whatever.

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#247

Post by ChrisMarshallNY »

dc96 wrote: post #241
ChrisMarshallNY wrote: post #240

Earlier quoted context omitted.

Friend of mine, with money , has a coffee machine, by a company I’d never heard of, called “Jura”[0]. I’d not heard of it, because it’s not for plebes, like me. Grinds and brews a perfect cuppa in about a minute. I used to have a toddy maker, where you dumped a whole pound of ground coffee into a bucket of water, let it sit overnight, in the fridge, then you drained through a filter. The resulting thick liquid was li…

Looks like the comment you replied to links to a Jura as well

Yeah. My friend has one that cost around 3 grand.

The main issue that I would have, is maintenance. I would guess that it would need a fair bit of cleaning.

I just use a fairly basic Braun Melitta filter, and it does great.

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#248

Post by jdlshore »

taylorportman wrote: post #229
solardev wrote: post #225

Earlier quoted context omitted.

This is why I love my fully automated luxury mediocre espresso maker ( https://www.seattlecoffeegear.com/blogs/scg-blog/jura-a1-rev... ). I push a button, it grinds the coffee and does stuff inside that I can't see, then moments later I have a perfectly average cup of something resembling burnt bean soup. I don't know whether it's megasonically brewed or absolute-zero infused or just wet caffeine pills. Sometimes it'…

Your ambivalence contributes little to the conversation.

Whereas I appreciated the unexpected spice, only to quickly be reminded by your comment that, yes, this is HackerNews.

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#249

Post by [deleted] »

solardev wrote: post #225
dahart wrote: post #17

Recently I discovered that many coffee shops, maybe half in my sampling of a couple dozen in different cities, are selling cold coffee (brewed hot, then refrigerated) under the name cold brew, and even the ones that actually cold-brew them seem to be under the impression that it needs to be served cold. I was laughed at in one hipster joint for asking for a steamed or warmed cold-brew, and another one initially refus…

This is why I love my fully automated luxury mediocre espresso maker ( https://www.seattlecoffeegear.com/blogs/scg-blog/jura-a1-rev... ). I push a button, it grinds the coffee and does stuff inside that I can't see, then moments later I have a perfectly average cup of something resembling burnt bean soup. I don't know whether it's megasonically brewed or absolute-zero infused or just wet caffeine pills. Sometimes it'…

[deleted]

Re: Cold brew coffee in 3 minutes using acoustic cavitation

#250

Post by kibibyte »

NoGravitas wrote: post #123
dahart wrote: post #40

Earlier quoted context omitted.

> brew temp and serving temp are orthogonal Yes!!! I’m biting my tongue a little on how infuriating the process has been to ask cafes for warmed cold brews, but you’re spot on and exactly right. I’m baffled that so many people who sell coffee for a living, think they know a lot about it, and act like coffee snobs, don’t seem to understand what cold brew even is. (Or, in a few cases in my sampling I’m certain it was w…

> I’m baffled that so many people who sell coffee for a living, think they know a lot about it, and act like coffee snobs, don’t seem to understand what cold brew even is. Light roasts came (back?) into style among coffee snobs a few years ago because it highlights the difference between different sources/regions/whatever. Ever since then, the former best coffee shop in my town has been exclusively producing sour, ve…

Light roasts are great! But there are just a lot of straight-up bad renditions of them, as a result of lack of adequate training on either roasting or brewing, to the consternation of many of those coffee snobs. Unfortunately, this just happens when shops follow trends.

Roasting well in general is already quite challenging and is a lot more than just arriving at a certain bean color or temperature. Vegetal flavors are very much a roasting mistake that's being passed off as an inherent characteristic of a light roast. Combine that with techniques better suited to brewing (or pulling shots of) darker roasted, and you have a recipe for a dull, astringent, sour cup.

That being said, a sour espresso shot is always possible regardless of dark the coffee is, so I'd argue it has a lot to do with a cafe owner's willingness to train themselves and their staff to work with lighter roasted coffee.

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