Begin by mixing together the flour, the water, and the salt until the mixture is smooth.
Cover the pan and allow it to stand at room temperature for between 20 and 30 minutes.
After the mixture has sat for 20 to 30 minutes, stir the baking powder into the mixture.
Put the cooking oil or shortening into a deep fat fryer and carefully insert a candy thermometer to ensure the proper cooking temperature.
Take the flour mixture and begin to heat it over high heat.
Carefully dip the candy bars into the batter, allowing any excess to drain off before putting them in the deep fryer.
Fry the candy bars at 375 degrees until they have become golden and crisp.
Carefully remove the candy bars from the deep fryer and allow them to drain on a paper towel before serving.