Potato chips

The idea of making them as a food item for sale in grocery stores came to many people at around the same time, but perhaps the first was William Tappendon of Cleveland, OH, in 1895. He began making chips in his kitchen and delivering to neighborhood stores but later converted a barn in the rear of his house into "one of the first potato chip factories" in the country.

Potato chips serve as an appetizer or snack. Commercial varieties are packaged for sale, usually in bags. The simplest chips are simply cooked and salted, but manufacturers can add a wide variety of seasonings (mostly made using MSG and herbs or spices). Chips are an important part of the snack food market in English-speaking countries and many other "western" nations.

Wikipedia info