Apart from flavour differences (related to blade grinders heating the beans more as they grind), which I think probably are fairly subtle, there's a mechanical issue: burrs are supposed to provide a more even particle size. The main problem with blades is you tend to end up with a mix of too-fine dust and too-large chunks. If burrs really avoid this, it'd be worth paying a bit extra for.
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Date: 2010-04-30 10:26 am (UTC)