Whenever possible, grind your own beans. Coffee stays fresh longer in whole bean form.
There are two types of grinders, a blade grinder and burr grinder. Blade grinders cut the coffee, so you will find that your coffee grinds are of different sizes (bad!). Burr grinders are adjustable and give you a much more accurate grind (good!).
Percolators and french press need the coarsest possible grind so that the grinds do not fall through the metal tray into your coffee, and so you do not over extract the coffee. Drip Brewers need a medium grind, often called a #4 grind. At Terra Verde Coffeehouse we call this house or regular grind.
Let’s take a look at the kinds of grinding levels that are most common. Here is a visual picture for each level
4-DRIP BREWER (HOME STYLE)
5-AUTO DRIP (COMMERCIAL STYLE)
7-ESPRESSO SETTING 1
8-ESPRESSO SETTING 2
9-TURKISH (PRETTY MUCH POWDER)