Before you touch any settings, run a quick check. Look at your grind: it should feel like coarse sea salt, not pebbles. If it looks chunky, go finer. Next, make sure your water is actually hot—just off the boil, around 200°F. If you let it sit, it cools fast.

Then, time your next brew. From the moment you start pouring, you want the whole process to take about 4 minutes. If it finishes in 2:30, your grind is too coarse, simple as that.