The difference between the two can be quantified in two core differences.

1) FRICTION
Inexpensive blade grinders chop the beans into a powder. This creates a significant amount of friction and heat. Burr grinders tear the beans apart with little friction and little heat.

This makes a difference because high quality beans are roasted to a very specific point. Generating more heat (especailly inside of the bean) will change the flavour.

2) ABSORPTION & OIL
The grind / powder created by both of these different methods produces a different result. Blade grinders cut and almost seal the bean as it works while Burr grinders almost pull the bean apart resulting in a product that absorbs and releases water better. As a result, you receive more flavour from a Burr grinder.

PERSONAL OPINION

I enjoy a good cup of coffee. I personally have a burr grinder and order beans directly from the source. Having an early taste test between my old blade and burr grinders showed me that there isn't a lot of difference. Again, this is a personal opinion and being Canadian, my taste buds are damaged from regularly consuming as much beer as coffee.

Burr grinders are harder to clean. Cleaning either Burr or Blade grinders is very important; Burr grinders are best cleaned with a brush while Blade grinders can be easily whisked out with a dish cloth and water.

I suggest that you spend the extra money on ordering a variety of beans. Find good suppliers and when you find your favorite, order direct and stick with them.
Source(s):
I have spent too much time thinking about coffee.


Permalink | Report