A burrito was a dish, generally a fast food item, from the Mexico region on Earth. It consisted of either a flour or corn tortilla wrapped around a filling of beef, pork or chicken and other ingredients such as rice, beans, onions, cheese, and peppers, topped with various condiments such as guacamole, sour cream, and salsa.
While on 20th century Earth, Lieutenant Tuvok bought his companions Tom Paris and Rain Robinson chili burritos, Goliath Gulps, and hot dogs for breakfast. Robinson likened the meal to something she would expect to eat on an afternoon at Dodger Stadium. (VOY: "Future's End, Part II")