Nothing beats a french fry that's crispy on the outside, and still soft and warm on the inside, but it's tough to get it just right when you cook them at home. Oddly enough, the secret to that restaurant-style crunch might be your freezer.
Photo by BW Folsom (Shutterstock)
Osas Obaiza at WonderHowTo explains how it's done:
After frying your fries for about a minute, shake off the excess oil, place them in a container and toss them in the freezer for a few hours. The moisture trapped inside the fries will freeze, forming tiny crystals, while the outside will solidify, creating that delicious crunch.
Once they're thoroughly frozen, just fry them in oil for a slightly shorter amount of time than normal. Once they're done, the outsides will retain a satisfying crunch, and the insides will be deliciously soft.
If they still aren't quite right, try combining this technique with presoaking to achieve a little more crispiness, and check out the source link for some more french fry hacks.