The ratio of coffee to water can vary based on your brew method and taste preferences, but it's recommended to use one part coffee to 15–18 parts water. If you’re adjusting the ratio for the first time, start with a 1:17 ratio and adjust from there.

Different brewing methods require different grind settings. A good rule of thumb is that shorter brew methods like espresso or Aeropress require a finer grind, while slower brew methods like French Press work better with a more coarse grind.

Grind your coffee right before you brew for the best results.

Never use boiling water or you may scorch your coffee. Brew with water heated to between 195º to 205º Fahrenheit (roughly 30 seconds post boil).

This could be happening for various reasons, but often it's a matter of adjusting the grind setting or brew time.

If your coffee tastes sour, you may need to brew it longer or try adjusting your grind finer. If it tastes bitter, you may need to have a shorter brew time or adjust your grind to make it coarser.