Tostitos is a bran of tortilla chips and (more recently) dips produced by Frito-Lay and introduced in 1979, with national distribution reached in 1981. They are made from all-white corn and do indeed contain trans fat in the form of partially hydrogenated soybean oil despite the "0 grams trans fat" label . Traditionally, Tostitos chips contain no extra flavoring or preservatives, and thus are advertised to be suited for dipping. They are lightly salted, though less than the average cracker, so barely noticeable. Chips are about 1 ⅓ of an inch in diameter, and are often eaten with salsa or nacho cheese dip, which the company also makes.