I always recommend using peanut, or canola oil when making anything fried at home. They have a high smoke point, which means they can withstand the high heat of the fryer without burning. This helps to ensure that your fries come out nice and crispy on the outside, while still being cooked through on the inside. Of course, you can always use vegetable oil if that’s what you have on hand. Just be aware that it has a lower smoke point than peanut or canola oil, so you may need to adjust your cooking time accordingly.