Lays Classic potato chips are known for their simple ingredients, typically consisting of potatoes, vegetable oil, and salt. The specific formulation and seasoning can vary slightly depending on the country of origin. For example, a version from China lists potato, vegetable oil, and a seasoning with salt and flavor enhancers (E621, E635, and E551). A Canadian version lists specially selected potatoes, vegetable oil, and salt, and is noted as being gluten-free and Kosher.