Fry color may be determined in accordance with contract specifications by using the Munsell Color Standards for Frozen French Fried Potatoes, Third Edition, 1972, 64-1. 5 Select a minimum of twenty (20) potatoes at random from the official sample. Slice each potato from stem to blossom-end into 1/2 square inch strips. Unless otherwise specified, fry center cut strips in oil for a minimum of 3 minutes at 350 °F or 2 1/2 minutes at 375 °F.