Item 1 of 4
Item 1 of 4
expiredTattyBear | Staff posted Jul 8, 2026 7:09 PM
2-Pack 22-Oz Presto Dorothy Rapid Electric Coffee Cold Brewer $10 + Free Shipping
$10
$48
79% off
Meh
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MehDeal Details
Meh [meh.com] has a 2-Pack: 22oz. Presto Dorothy Rapid Cold Brewer on sale for $10 - Shipping is Free
Directions:
Includes:
Directions:
- Select your choice in the dropdown menu on the checkout page (If Applicable)
- Choose the Standard/Flat Shipping option (Bottom One)
- Apply Code FSDEALS for Free Shipping
Includes:
- 2x Presto Dorothy Rapid Cold Brewer
- 2x Carafe
- 2x Plunger with Filter
- 2x Grounds Cup
- 2x Power Cord
- 2x Detachable Base
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Meh [meh.com] has a 2-Pack: 22oz. Presto Dorothy Rapid Cold Brewer on sale for $10 - Shipping is Free
Directions:
Includes:
Directions:
- Select your choice in the dropdown menu on the checkout page (If Applicable)
- Choose the Standard/Flat Shipping option (Bottom One)
- Apply Code FSDEALS for Free Shipping
Includes:
- 2x Presto Dorothy Rapid Cold Brewer
- 2x Carafe
- 2x Plunger with Filter
- 2x Grounds Cup
- 2x Power Cord
- 2x Detachable Base
Community Voting
Deal Score
+18
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31 Comments
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Our community has rated this post as helpful. If you agree, why not thank SumDuud
64oz glass ball jar
(available at Target 6/ $14)
Add 2) cups coarse burr grinder ground coffee.
Fill rest of jar w/ cold water
Shakey shake
Leave 20 hours
Shakey every few hours
Pour thru metal strainer.
Then pour through coffee filter.
Winning
You get two of them for $10 and free shipping, which is a lot of entertainment, parts, and tea or other drink mixes.
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64oz glass ball jar
(available at Target 6/ $14)
Add 2) cups coarse burr grinder ground coffee.
Fill rest of jar w/ cold water
Shakey shake
Leave 20 hours
Shakey every few hours
Pour thru metal strainer.
Then pour through coffee filter.
Winning
Our community has rated this post as helpful. If you agree, why not thank PuckS9852
Ultrasonic can drastically decrease steeping times for lots of things.
Not saying this is ultrasound, but saying a fact about ultrasound and coffee.
Our community has rated this post as helpful. If you agree, why not thank PublicUsername
Ultrasonic can drastically decrease steeping times for lots of things.
Not saying this is ultrasound, but saying a fact about ultrasound and coffee.
"Dorothy, I will save you from awful coffee from that tornado cold brewer with my ultrasonic brewer"!
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Ultrasonic can drastically decrease steeping times for lots of things.
Not saying this is ultrasound, but saying a fact about ultrasound and coffee.
Researchers at the University of New South Wales have developed a method to brew espresso-strength coffee in 2–3 minutes using ultrasound and room-temperature water, eliminating the need for heat or high pressure. This process, published in the Journal of Food Engineering, uses acoustic cavitation to extract flavors and oils, achieving chemical and sensory profiles comparable to traditional espresso while consuming 75% less energy.
Key details of the ultrasonic brewing technique include:
- Mechanism: A transducer attached to the espresso basket generates high-frequency sound waves that create microscopic bubbles. The collapse of these bubbles (cavitation) mechanically fractures coffee grounds, accelerating extraction without heat.
- Efficiency: The system uses only 24% of the energy required by a conventional espresso machine, as it avoids the energy-intensive process of heating large volumes of water.
- Sensory Results: In blind taste tests with 100 coffee drinkers, participants could not reliably distinguish the ultrasonic espresso from traditional hot espresso in terms of aroma, flavor, bitterness, and overall liking.
- Versatility: The same technology can also reduce cold brew production time from 12–24 hours to under 3 minutes, with consumers even preferring the ultrasonic filter coffee over conventional pour-over.
This sounds better than I thought when I read your post. How it is done sounds easily doable as a diy project.Ultrasound enables espresso-strength coffee brewing in 2–3 minutes at low temperature with lower energy consumption
https://www.sciencedire
Coffee brewing sonoreactor for reducing the time of cold brew from several hours to minutes while maintaining sensory attributes
https://www.sciencedire
Same group explaining it (with soft Jazz music background) https://www.youtube.com/watch?v=paDL4uq
(fyi - not to get off the subject too much and confuse, but this is not how the Dorothy works)
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