Due to the formation of crust during deep-fat frying, the oil absorbed remains on the surface of the product and penetrates into the structure during cooling or holding. Fig. 2(a,b) indicates the changes in oil content on the surface and into the surface of potato slices, which were deep-fat fried at 180 C and held at ambient temperature (control) as well as at 100, 120, 140, 160 180 C. The sample immediately after the completion of frying showed that out of the total oil content of the sample, 0.440 kg/kg), 92% of the oil was available on the surface (0.406 kg/kg) and 8% of the oil penetrated (0.034 kg/kg) through the product. These results indicate that the most of oil absorbed during frying remained on the surface due to crust formation. Similar observations were also reported by other researchers