Crisco may be used in a deep fryer. According the shortening manufacturer's website, the proper technique entails adding enough shortening to the fryer to submerge the food completely.
The deep fryer may be filled with Crisco to within 1/2 inch of the fill line. The shortening should be heated to between 365 and 375 degrees Fahrenheit before the food is added.
Foods that stand up well to deep frying include fish, poultry and vegetables. Cut pieces are placed in the fryer's basket, which is lowered into the hot shortening. The food is allowed to fry until it is cooked through and has turned golden brown.