If there's one change you can make to instantly improve your coffee, it's buying whole beans and grinding them just before brewing.
Coffee beans contain volatile aromatic compounds that dissipate quickly after grinding. Within 15 minutes of grinding, coffee loses about 60% of its aroma. Pre-ground coffee has already lost much of its complexity by the time you open the bag.
Investing in a good burr grinder ensures a consistent grind size, which is crucial for even extraction. Whether you're making French press or espresso, fresh grinding unlocks the full potential of the bean.