If your AeroPress coffee tastes watery, the usual suspects are a too-coarse grind, a too-short steep, or a weak coffee-to-water ratio. You don't need to spend a cent to fix it: grind finer (think table salt), steep for two full minutes, and use about 15–17 grams of coffee per 250 ml of water. That's the fastest path to a cup with body and flavor.