Capresso Infinity Burr Grinder
When I first got my espresso machine, I was having a hard time making tasty, rich, creamy shots of espresso. I complained about it on Boing Boing, and I got a bunch of email suggestions from espresso junkies. Almost every one of them told me that it is impossible to make good espresso using a blade grinder.
"You must use a burr grinder," they all said. Burr grinders crush the coffee beans between conical gears, while blade grinders lacerate the beans. Burr grinded coffee grounds have a consistent size and shape, while blade grinded grounds vary greatly in size and shape.
I resisted getting a burr grinder for a while, because I just didn't buy the logic. Besides, burr grinders are more expensive than blade grinders. The Rancilio costs $200, whish was way too much for me. But someone told me that the Capresso Infinity Burr Grinder for $89, was fine, so I took the plunge and bought it.
It really does make better espresso. Much, much better espresso. Before I got it, the coffee just gushed out of the portafilter and it was sour and weak. With the burr griunder, the coffee dribbles out of the portafilter and it is very creamy and rich. I shold have listened the espresso junkies sooner! Link
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Blade grinders also heat the beans because of their high speed, possibly upsetting any delicate roasting levels.
Whoa!
You're using something with an electric motor in it?
Do you know what a fluctuating magnetic field can do to a bean?
Either get a hand-cranked grinder or bite the bullet and get a pneumatic model. (The sound of a compressor kicking in at 6:00 am may annoy the neighbors, but it will soon be part of your morning routine.)