To make fries crispy again, reheat them in an air fryer, oven, or on the stovetop (with or without oil) using high heat in a single layer to remove moisture and crisp the exterior, avoiding the microwave which makes them soggy. The best methods involve hot, dry air or hot oil for a quick, crispy result.
Bake them in a toaster over or regular oven at 450F. The Toaster oven with convection would be both the best results and the fastest. Microwaving wont rejuvenate them, just heat them up while turning them really soggy.
No matter what, do not—we repeat, do not—use a microwave! If you do, you're all but guaranteed to get soggy fries. No one wants this. Instead, the best way to reheat French fries is in the oven at a high temperature.
Increase the Oil Temperature: Increase the oil temperature to 400°F (205°C). Fry Until Crispy: Fry the potatoes again in batches at 400°F (205°C) until they are golden and crispy, about 5-6 minutes. Don't overcrowd the pot; it can lower the oil's temperature and make the fries soggy.
The secret tips that make all the difference: 1. Serrated knife to cut the potatoes = rougher surface = crispier 2. Blanch in vinegar water = wash away surface sugar that causes fries to burn before turning crispy (awesome tip from the legendary Kenji Lopez-Alt "The Food Lab") 3. Double fry!
During the initial frying process, the fries are fried evenly in hot oil creating that crispy crust. Reheating the fries results in an uneven distribution of oil and the fries become greasy and limp.
Fries reheated in the microwave are usually less crispy than fries reheated using other methods. If crispiness is your goal, we recommend using a different method. That said, when you want fries reheated as quickly as possible, the microwave is a good choice.
Method #2: 10-Minute Cold-Water Soak
I then drained them and patted them dry, tossed them with oil and seasonings, and spread them onto a parchment-lined sheet pan to bake at 425°F for 30 minutes, flipping after 20 minutes. Results: The fries were moderately crisp, with a teensy bit of chewy-crisp skin on the outside.
Second to double frying, our preferred option of reheating fries is in the oven. The oven, or toaster oven, is a great second-choice option for reheating fries. Plus, broad baking sheets are a great way to reheat lots of fries at once. Start by preheating the oven to 400 to 450 degrees F (205 to 230 degrees C).
MICROWAVE
For the best results, put a paper towel on a plate and then put the pieces of chicken on top. The paper towel will help absorb excess moisture and help preserve the crispness of the skin. Heat in 30-second intervals, flipping the pieces each time until they're warmed through.
Politte explained, "When too many fries are in the pan, the moisture released can't escape, leading to a soggier texture." He also emphasized the importance flipping your fries halfway through the reheating process, thereby ensuring that the effects are evenly distributed and consistent — after all, there's nothing ...
Excess moisture can cause hot oil to splatter and can also hinder the fries from crisping up evenly. Patting them dry ensures that the oil adheres to the surface of the fries evenly, resulting in a more consistent golden color and crispy texture.
While you can totally turn leftovers into a different meal (say, a french fry frittata) just reheating your french fries in the microwave won't make the fries crispy again. Instead, we put four popular methods for reheating french fries, each promising crunchy revival, to the test.
For crispier results, opt for a higher power level. However, be mindful of the cooking time, as higher power levels can cook food faster. Utilize Microwave Safe Accessories: Microwave-safe accessories such as crisper trays, grill pans, and silicone mats can help achieve crispier textures.
Toss your fries into a sealed container or bag and remove as much air as possible. To soak up any extra moisture, be sure to add a paper towel. It's as easy as that! Now, you are ready to keep your fries in the fridge for two to three days.
If your fries are still frozen, they can be baked, fried, or air-fried just like fresh ones. For leftover cooked fries, reheating them in an air fryer or oven helps bring back their crispiness. Avoid microwaving, as it makes them soggy.
Corn Starch: Adding a thin coating of corn starch to the potato fries before frying can help create a crispier exterior. When the corn starch comes into contact with the hot oil, it forms a barrier that traps moisture within the potato while also developing a crunchy crust.
Soak the potato slices in cold water for about 30 minutes. This helps to remove excess starch and will make your fries crispy.