Pizza Pizza was a type of Human food , originating as an example of Italian food , that consisted of a square or circular piece of dough covered in tomato or other sauce , and cooked with numerous toppings , the most common of which is mozzarella cheese . Other popular toppings included pepperoni , mushroom s , anchovies , and sausage . The finished pizza was cut into wedge - shaped slices or squares . In 1986 , cetacean biologist Gillian Taylor invited a time - traveler from the future , James T . Kirk , to a dinner of pizza to discuss the future of and Gracie , two humpback whale s she studied . She ordered a large mushroom and pepperoni pizza with extra onion s and a glass of Michelob . Kirk , unaware of the size of a pizza , ordered one too . ( ) In 1996 , Rain Robinson ' s office at Griffith Observatory on Earth was invaded by two time travelers from the 24th century , Tom Paris and Tuvok , while she went for a box of pizza . She caught them when she returned . ( ) Pizza was usually enjoyed hot , but 21st century criminal Loomis found an extra slice of Hotbox pizza in its box left out atop his sink , and ate it immediately , after arriving home one night in 2004 . ( ) In 2151 , Hoshi Sato asked Malcolm Reed ' s sister Madeline if Malcolm in his youth had never said " " Let ' s go out for pizza " " or something similar , but she denied this . ( ) Later that year , Commander Charles Tucker III suggested to Tolaris that he should sample pizza , since the Vulcan was unaccustomed to Human cuisine . ( ) Hoshi Sato had fond memories of a pizzeria called Fiorella ' s in San Francisco on Fountain Street . In 2153 , Tarquin extracted these memories from her mind to create the perfect slice of pizza . ( ) The same year , while in the Delphic Expanse , T ' Pol received a pepperoni pizza as food ration , from which she could easily pick off the pepperoni according to Tucker . ( ) While suffering from the effects of crossing the transwarp threshold in 2372 , Lt . Paris stated that he was craving a piece of pepperoni pizza with Kavarian olive s . ( ) While the starship was trapped in the Delta Quadrant , Tom Paris tried to convince mess cook Neelix to hold a weekly pizza night in 2374 . Neelix thought there might be difficulty in replicating the cheese . ( ) While defecting to the Federation with Odo in 2375 , Weyoun 6 sampled the runabout ' s entire menu . One of the meals he had was pepperoni pizza , which he attempted to eat with chopstick s . ( ) Later that year , when Paris was in " Voyager " s brig and was only served basic nutrition by Neelix , like Leola root stew , Paris asked whether Neelix couldn ' t just replicate a pizza . ( ) In the " Bashir 62 " holoprogram , Tony Cicci claimed that the chef of Vic ' s Las Vegas Lounge ( under Frank Chalmers ' s ownership ) " wouldn ' t know a good pizza if it hit him in the face " . ( ) In 2376 , Neelix , after announcing from his galley that he had no more marsupial surprise left , suggested to the various aliens visiting " Voyager " from the Markonian outpost that they have pizza instead . ( ) That same year , after Paris had been traumatized by the Nakan memorial , B ' Elanna Torres visited him in his quarters since he had missed breakfast and told him he had to eat something , like pizza . ( )