To deep fry French fries properly, the typical process involves two stages of frying at different temperatures:

• First fry: Heat the oil to about 325°F (163°C) and fry the cut potatoes for around 5 to 6 minutes until they are tender but not browned. This initial fry cooks the interior of the fries

• Rest: Drain the fries on paper towels and let them rest for a few minutes to cool and allow moisture to escape

• Second fry: Increase the oil temperature to 375°F to 400°F (190°C to 205°C) and fry the potatoes again for 3 to 4 minutes until they turn golden brown and crispy on the outside

• Drain and season: Remove the fries, drain on paper towels, and season with salt while hot so the seasoning sticks

In summary, total frying time is usually about 8 to 10 minutes in two stages: 5–6 minutes at lower heat, then 3–4 minutes at higher heat for crispiness and color. The exact time can vary slightly depending on the thickness of the fries and the oil temperature, but this two-step method is key for perfect deep-fried French fries.