Going against conventional wisdom, researchers at the University of Portsmouth in the UK say the way to consistently make better espresso is by using fewer beans and grinding them more coarsely, reports Interesting Engineering:
"When beans were ground finely, the particles were so small that in some regions of the bed they clogged up the space where the water should be flowing," Dr. Foster said in a press release announcing the research. "These clogged sections of the bed are wasted because the water cannot flow through them and access that tasty coffee that you want in your cup. If we grind a bit coarser, we can access the whole bed and have a more efficient extraction. It's also cheaper, because when the grind setting is changed, we can use fewer beans and be kinder to the environment. Once we found a way to make shots efficiently, we realised that as well as making coffee shots that stayed reliably the same, we were using less coffee."
Coffee YouTuber James Hoffman reviewed the 9Barista stovetop espresso machine. Here’s a half-section illustration from the 9Barista website so you can see what’s going on. It has two boilers, a heat sink, a coiled heat exchanger, and a spring-loaded valve: It’s available from the 9Barista espresso website for $385.
Coffee expert James Hoffman tried a bunch of different supermarket instant coffees to find out which one tastes the best. He entered into the test with a strong bias against instant coffee for two reasons 1) “convenience, by and large, results in a sacrifice of quality,” and 2) “instant wants to be cheap.” But he […]
Your heart will race and your skin perspire, of course, but the real magic happens in your kidneys. Dr. Bernard Hsu reports on B.B., a 21 year old man presenting to the emergency room unconscious, having been found collapsed while studying for his final exams. Unfortunately, his worst subject just happened to be chemistry.
Back in the 50s and 60s, it was no big deal in most areas to make a call to your local liquor store and have beer, wine and spirits delivered right to your house with little to no restriction. However, that ease and simplicity certainly isn’t in place today. Alcohol delivery laws in 2020 are […]
Unless you’re a regular cannabis user, you might be surprised to learn that the plant itself is basically just that — a plant. It’s not until you put cannabis under high heat that the process of decarboxylation breaks down that raw form into the psychoactive compounds that can actually benefit the body. This unlocking process […]
With our smartphones serving as the vital tether that links us to the rest of our lives, it’s no wonder how low batteries and power emergencies can occasionally feel like a life-and-death situation. I mean, it’s usually not, of course…but darned if it doesn’t feel that way when your indicator is showing only 5 percent […]