History of Coffee Grinder
The earliest mode of grinding was simple mortar and pestle. Later
mechanical means replaced mortar and pestle and coffee was grinded
between a stationary and a moving disc.
Present Day Coffee Grinder
Later more advanced grinders were made, the blade variant of the
grinders. They have the ability to produce a uniform grind of beans. A
uniform grind is essential because :
- It provides an even surface area for extraction.
- The uniform rind allows for even wetting.
- It also allows for even packing of the grounds.
Burr coffee grinders are ideally and
theoretically, pass an incoming bean under its burrs once. When the bean
finishes its pass, it is completely crushed into identically sized
pieces.
Types of Coffee Grinders
- Conical Coffee Grinders : The burrs are shaped
like two mating cones with the grinding teeth facing towards each
burr set. They preserve aroma and the intricate design allows a high
gear reduction to slow down the grinding speed. The slower the speed
the less heat is imparted to the ground coffee. This preserves the
flavor of coffee.
- Flat Plate Coffee Grinders : The burrs are
plate shaped and lie atop each other. They grind at a higher speed,
thus imparting more heat to the ground coffee. They are well suited
for use at home.
