Re-crisped leftover French fries

Put the cold fries in a dry non-stick pan over medium-high heat and arrange them in a single layer, all in contact with the pan.

After the pan has heated about a minute, flip and toss the fries every 30 to 45 seconds, settling them back into one layer each time; a spatula or tongs can be used instead of flipping.

Keep going a few minutes, until the surface moisture dries off and the residual oil re-crisps the fries, and they sound and feel crispy; plate up.