To keep onion rings from getting soggy, it's important to follow a few tips: First, make sure the onion rings are well-drained after dipping them in batter or coating. Fry them at the right temperature (around 350°F or 175°C) to ensure they cook quickly and evenly, and place them on a wire rack or paper towels after frying to allow any excess oil to drain away. Serve them immediately for the best crispy texture.