Dip onion rings into plain flour, then liquid mixture, then into seasoned flour mixture. Drop about 4 or 5 rings into the oil and cook for 2- 2 1/2 minutes, or until they are golden brown and crunchy. Scoop out with a large slotted spoon (or heat resistant spatula) onto a paper towel lined tray. Season with a little salt. Repeat process for the next several batches.