Heat oil to 375 degrees F. In the meantime, slice onions and toss them into a mixture of the flour and salt. Gently shake off any excess flour. Drop by the handful into the hot oil. Cook two to three minutes, stirring often, until golden brown.
Remove onion rings from oil using a skimmer; place on paper towel or a paper bag to drain. Salt while hot.
Keywords: Appetizer, onion rings