French fries are a Human food, made of deep-fried strips of potatoes.
When T'Pol and Captain Archer time traveled back to 2004, they visited a "Burgerland" for a meal. Anything they sold could be made into a combo, adding fries and a soft drink.
Loomis, who they were holding in captivity, ordered the fries, offering T'Pol some because they were one of the few things that did not contain meat. (ENT: "Carpenter Street")
Chef planned to serve French fries with Argelian cole slaw and grilled alpine surprise on August 22nd, 2152. (ENT: "Singularity")