Interesting thread. From reading our ~ 24 prior pages I saw cold-brews mentioned a few times times without much fan-fare. I'll contribute there. I've been making cold-brew coffee for ~ 10+ years. I drink cold-brew year round at the rate of 2000-3000ml / day. I make it up a couple of days ahead of time and just keep the assembly-line going. I store the "cold-brew" in glass or stainless steel containers in my fridge and then consume them throughout the day. Most people who see my large insulated iced cup assume it's tea.
I've tried 100's of different coffee brands (literally) available locally and via order. I now prefer the "Medium" roasts to the "Dark" roasts. Dark now taste "super bitter" and is certainly more oily - aka more like Starbucks than any other reference I have. I'm too lazy to buy a good grinder and go whole bean though I know all the benefits! To keep my costs down, I usually pick up the 1-2 ground bags/week on sale from the local supermarket. They have a 1/2 aisle of nothing but coffee!! I enjoy this model b/c it allows me to try some brands that I probably would not b/c of regular pricing can be $15 / 12-16 oz bag and it varies the flavors. I don't buy "flavored coffee" nor do I do de-caf. All caffine baby or what's the point?
American coffee is nearly always Arabica beans but I also favor Robusta which has about 2x the caffine kicks. Many people do not like 100% Robusta which tends to be from Vietnam. YMMV.
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I've used this device exclusively and highly recommend it for cold brewers. No mess, no fuss and easy to maintain and clean. They also make a smaller "single serving" unit if that's suitable. I started out with the smaller unit then quickly realized the 1500ml version was more suitable for my consumption rate!
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https://purepuer.com/puer_tea/do/product/Piao_i_teapot/Piao I Tea Pot 1500cc GL-897 double lid
I put 3 coffee scoops in the upper section, fill with warm/cool water and shove it into the fridge. I typically make two runs of the coffee, a first brew, then I follow that in another 8-12 hours using the same coffee. The 2nd brew is of course a much lighter and weaker brew. Call me cheap - that's OK. I figure if a 1st and 2nd pressing works for other things, why not coffee. In the end, I end up with a moderate coffee. I make 1-2 of these per day.
Over the years I found the 1st drain cold brew just kick a$$ strong so I modified my routine. I put about 8 oz of water in the bottom of the pot now and add 1 package of only this Trung Nguyen "G7 BLACK Instant coffee" (not the 3 in 1)!! This is the Vietnamese instance coffee that is ground like dust and has a unique flavor. Some people
hate it others think it's awesome. For me it's like adding a 4th scoop of coffee to the upper chamber but it imparts a developed flavor. I can discern immediately the differences.
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My better 1/2 grinds her own coffee every AM but she consumes just one French Press cup per day where I drink my stuff from 06:00 until ~ 16:00. I find if I do not stop then, I might have trouble falling out by 21:00. Overall, I find the cold brews less "bitter" than most hot-brewed, then chilled s where they brew the coffee like normal with heat, then put it in the fridge to chill. I can tell you, that is NOT the same result and tastes different.
Interesting thread. I hope you find this helpful. The real PIAO I 1500ml size was the final ticket for me. Oh.. I clean the PIAO I setup weekly with just warm soapy water and a good shake and rinse. GTG for the next week. Full disclosure: I have no financial interest in anything listed in this posting! Stay safe, stay alive. Peace.