Chef John teaches how to cook homemade French Fries. 1. Cut the potatoes into strips the size and shape of French Fries. 2. Rinse in cold water. 3. Soak for about half an hour. Change the water several times. 4. Drain using paper or kitchen towel. 5. Fry the potatoes at 275 degrees F for about 5 minutes. 6. Fish the potatoes out and layer them on a paper towel. Cool completely. Chilling them is better. 7. Reheat the oil to 350 degrees F and fry the potatoes for 5-10 minutes or until golden brown. 8. Scoop them out and layer in paper towel to cool. 9. Dash with salt and serve with ketchup.