CoffeeKid - A Closeup Look at Ground Coffee! (#)
„The highlighted element is an individual "grind", and it has a nice flat face for water to run against under pressure and extract all the goodies from. What I always find amazing is even at this small a size, the ground bit still has enough cellulose structure to it to actually curl and twist without further breakup.“
http://www.coffeekid.com/cafetalk/10-25-2000 - Cached
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„Fresh beans are key - and keep them whole until just before you want to brew. Don't pregrind - grind only seconds before you pull your espresso shot.“
http://www.coffeekid.com/espresso/cremarule
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„There's a lot of good grinders on the market today that do the job they are assigned - providing an even grind at various levels of fineness needed for a specific brewing job. The key is only burr grinders will do, and some burr grinders aren't as good as others.“
http://www.coffeekid.com/coffee/grinders
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„But by the 1880s, the Germans, French and Italians are experimenting with using steam pressure to force water to higher than 1 atmosphere (normal air pressure) to get more essence out of finer grind coffee. By 1905, the first commercial success - the Pavoni/Bezerra Ideale Espresso machine. This machine extracted a heavy coffee essence using about 1.5 atmospheres of pressure. Was this the peak?“
http://www.coffeekid.com/espresso/nirvana
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„These are tricky shots to pull off. You grind so fine that you walk a tightrope between pulling a perfect shot, and stalling (or choking) your machine - a phenomenon where no brewed coffee comes out of the portafilter after you activate the pump. But when you achieve a great ristretto, there's nothing else like it.“
http://www.coffeekid.com/espresso/minifaq
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