u/CoffeeTeaJournal

I see people do this all the time: they brew a cup of tea, pull the bag out, and tightly squeeze it against the spoon to get every last drop.

Stop doing this. You aren't getting more tea, you are just extracting tannins.

The good stuff (the amino acids and caffeine that give tea its smooth flavor) extracts easily into the hot water while it steeps. But tea leaves are also packed with tannic acid, which is incredibly bitter. During a normal steep, most of those bitter compounds stay locked safely inside the leaf.

When you physically crush the bag, you force those concentrated tannins directly into your mug. It completely kills the flavor profile and leaves a harsh, dry feeling in your mouth.

Next time, just pull the bag out, let it drip for a second, and toss it in the bin. Try it tomorrow morning and I promise you'll notice how much smoother your tea tastes.

Why YSK: Squeezing the tea bag releases high concentrations of bitter tannic acid (tannins) that ruin the actual flavor profile of the tea, turning a smooth cup harsh and dry instead of making it "stronger."

​Hey guys, just wanted to nerd out for a second because the weather is warming up and my brewing brain is hyper-focusing on summer extraction physics.

​We all know traditional cold brew takes forever (12 to 16 hours) because cold water is just objectively terrible at dissolving the volatile compounds that give light roasts their floral, bright notes. You mostly just end up extracting the heavy, chocolaty profile.

​Flash-chilled pour over completely flips the script. You get the hot extraction at around 94^\circ C to pull those bright acids and complex aromatics instantly, then crash the temperature over ice to lock them in before they oxidize and fade away.

​My current dilemma though: when doing flash-brew, do you guys compensate for the reduced hot water volume by grinding a bit finer, or do you just push your water temperature higher to force a quicker extraction? I’ve been messing with a 60/40 water-to-ice ratio but feel like I'm leaving some sweetness on the table.

​What's your go-to move here? Grinding finer or just bumping the heat?

Hey everyone, weather is getting warmer here and I usually switch to cold brew around this time. I love it, but honestly it's a massive money pit if you buy decent specialty beans.

​I sat down and looked at how fast I was going through a standard $20 bag (the 12oz/340g ones). Cold water is just terrible at extracting flavor, so you end up using a crazy ratio like 1:8 to make a concentrate. I realized I was killing a whole bag in like 4 or 5 servings. That comes out to almost $4.50 a glass for homemade coffee, which is insane.

​I ended up switching entirely to flash brewing (Japanese iced coffee) and it basically doubled my coffee supply overnight.

​Instead of soaking grounds for 24 hours, you just do a hot pour over directly onto ice. The hot water pulls out all the aromatics and acids perfectly, and the ice chills it instantly so it doesn't get stale. Because the hot water does the heavy lifting, you can just use a normal 1:15 ratio. I use about 22g of coffee now and get roughly 15 glasses out of the same bag instead of just 4 or 5.

​The only thing I messed up the first time was the water ratio. You have to count the ice as part of your total water weight or it tastes like muddy water. My daily setup now is 165g of ice in the glass, 22g of coffee in my v60, and pouring 165g of hot water over it.

​One big tip though: don't use boiling water. It over-extracts the coffee and makes it super bitter. I usually aim for around 90-93C. If you just have a regular kettle on the stove, just pull it off the heat and wait like a minute or two before pouring.

​Has anyone else given up on cold brew because of the bean cost? Let me know if I'm the only one cheaping out on this lol.

Why YSK: Most of us assume that choosing a paper cup over a plastic one is the safer, eco-friendly option for our morning coffee. However, standard disposable cups require a thin layer of low-density polyethylene (plastic) to remain waterproof.

A study from the Journal of Hazardous Materials revealed that when this lining comes into contact with hot water (85–90 °C), it undergoes severe thermal degradation. Within just 15 minutes, it sheds billions of plastic microparticles and heavy metal ions directly into the liquid.

As someone who runs a coffee and tea journal, this was a huge reality check for me. It’s a stark reminder that using a high-quality stainless steel or glass travel mug isn't just about reducing waste—it's actively protecting your health from hidden plastics.

Source: https://doi.org/10.1016/j.jhazmat.2020.124118