Grind Your Own Beans (INeedCoffee.com) (#)
„"Have you investigated hand-cranked German coffee mills? (such as a Zassenhaus) They provide a wide variety of grind styles suitable for all coffee brewing devices (even home pump-driven espresso machines) and are efficient when used intelligently. They are quiet, although it does take an investment of effort to grind for larger quantities of coffee."“
http://www.ineedcoffee.com/01/01/grind/?page=2 - Cached
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Virtual Coffee: How to Choose Your Barista
„How long is the brewing time of the espresso? If the grind has been adjusted correctly, then the time that it takes an espresso (about an ounce to 1 1/2 ounces of beverage) to brew after the machine's pump is started should be no less than 20 seconds and no more than 30 seconds. If it comes out faster, then the grind was too course, and if it comes out slower, then the grind was too fine. A good barista will constantly be adjusting the grind to make sure that the extraction time is proper.“
http://www.virtualcoffee.com/aug/choose.html
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The Coffee Review - the world's leading coffee buying guide
„To those whose only coffee-making experience has been with brewing methods other than espresso, the remarks below concerning the importance of the correct grind in espresso will doubtless sound like the mutterings of a French omelet cook, even an obsessive French omelet cook. So be it, because grinding the coffee may be the single most important act in the entire sequence of espresso brewing events.“
http://www.coffeereview.com/ reference.cfm?id=214
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„Traditional filter brewing machines just use gravity to push the water through the coffee grounds. Espresso machines, on the other hand, use a pump to force the water through at 9 bars of pressure (but you know that - you read about it in the first edition!).Typically a filter brew will take 4-6 minutes to extract the liquor whereas espresso is brewed in just 20-25 seconds. Control of this brew time is of paramount concern to ensure great tasting espresso and the correct crema.“
http://www.matthewalgie.com/find_out/ lab-extraord.html
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„having made a few toddy coffees in my time, i'd suggest using a coarser ground than espresso grind. i've always been told the longer the brewing time, the coarser the grind. you mentioned seattle's best (now owned by starbucks...eeek)- their best-selling drink is a Naughty Toddy, Gloria Jean's is a Hotty Toddy- all use Toddy's process. i've asked managers at both places, and they use a medium roast, coarse grind- sorta like what you would use in an old fashioned percolator.“
http://www.coffeeforums.com/ posting.php?mode=quote&p=2987
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„To extract espresso properly it is essential to use a burr grinder and to grind per order. The two major types of burrs used are flat and conical. Conical burrs are desirable because they increase the surface area of each particle and the amount of flavor that can be extracted from the coffee. Since conical burrs have longer cutting edges, the burrs can rotate at lower speeds which reduces the heat created. Flat burrs should be replaced after 600 pounds of coffee have been ground and conical burrs should be replaced after 2000 pounds of coffee have been ground.“
http://www.coffeeresearch.org/espresso/ grindanddose.htm
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