Salt and vinegar onion rings

With the batter, the key thing is to make it and use it immediately. Don't wait - you want all those delicious bubbles from the beer to give that crispiness. So have everything ready to go, the hot oil, the sliced onions, and then make the batter at the last minute. You can use this batter for other things too - fried calamari, vegetables like zucchini.