Turn off the fryer and let it cool completely.
Find the direction of the grain in the stainless steel. When you inspect it closely, you should be able to see faint lines going in one direction. This is the grain.
Wipe the deep fryer in the direction of the grain with a soft, damp cloth.
Rub any large, greasy areas with a dab of liquid dish detergent in the direction of the grain if needed.
Wipe any remaining detergent and grease away with a clean, damp cloth.