3. You're not measuring
If you're baking a cake, you'd measure the amount of flour. Same goes for coffee. "If you want to make great coffee at home, one of the best things you can do is get yourself a small digital scale," says Geoff. They're cheap, fun to use, and will take out much of the guesswork. Geoff suggests a 1 to 16 ratio of coffee to water, which Cuvée's Lorenzo Perkins helpfully translated to 60g per L or 2tbsp per 6oz.
4. You're using a crappy brew method
You don't need a crazy-expensive espresso machine, but Lorenzo says a percolator isn't going to cut it. Even a decent drip machine will work, but if you want to level up, try a French press or a pour-over method.