Filed under: Dining
Coffee beans should be freshly ground immediately before brewing, so you should grind just one pot at a time. Oxidation begins immediately and flavors will degrade noticeably in just a few hours -- if you're looking for perfect coffee, no grinding should be done the night before.
There are two main types of coffee grinders: blade grinders and burr grinders. Blade grinders are the most common and the least expensive, and although they can grind coarse and medium sizes nicely, they can also have inconsistent results and are noisy (especially first thing in the morning). Also, when using a blade grinder it's important to grind in small bursts of a few seconds at a time to prevent heat from building up and burning the grounds.