French fries were a Human food, made of deep-fried strips of potatoes. A single piece was called a french fry.
When T'Pol and Captain Archer time traveled back to October 2004, they visited a "Burgerland" for a meal. Anything they sold could be made into a combo by 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")
In August of 2151, one of the dishes in the serving case of the mess hall aboard Enterprise NX-01 consisted of french fries and sandwiches. (ENT: "Fortunate Son")
Chef planned to serve french fries with Argelian cole slaw and grilled alpine surprise on August 22nd, 2152. (ENT: "Singularity")
A side of french fries accompanying a hamburger, hot dog or fried chicken was among multiple dishes that, in 2153, Tarquin served Human Starfleet Ensign Hoshi Sato, while she was on his planet. (ENT: "Exile")
In the late 2250s, a french fry was one of the many food items vomited out by food synthesizers when Me Hani Ika Hali Ka Po and Sylvia Tilly were in the mess hall aboard the USS Discovery. (ST: "Runaway")
In 2257, Una ordered french fries along with a cheeseburger with habanero sauce from a food synthesizer on the USS Discovery. (DIS: "An Obol for Charon")
In 2399, Cristóbal Rios got Soji Asha some french fries and peppermint ice cream, which she admitted that she liked. Jana likewise liked french fries and peppermint ice cream. (PIC: "Broken Pieces")