between 350-375°F
Likewise, how do you know when oil is hot enough to fry?
When the oil has preheated, dip the handle of a wooden spoon or a chopstick into the oil. If the oil starts steadily bubbling, then the oil is hot enough for frying. If the oil bubbles very very vigorously, then the oil is too hot and needs to cool off a touch.
Herein, how long do you deep-fry french fries at 375? Remove potatoes from water and dry thoroughly on paper towels. Heat oil in a deep-fryer to 375 degrees F (190 degrees C). Cook potatoes in hot oil until golden, 5 to 6 minutes. Drain on paper towels and season with salt.