Generations have been enjoying them. Now the Oreo is turning 100 today. Nabisco developed the cookie in 1912 at its Chelsea factory (NYC). The Oreo cookie has no cholesterol; the presence of which is a given that a product contains animal ingredients. As a result, PETA has the Oreo on its list of “Accidentally Vegan” foods. Some might argue that PETA’s list, with its 99.9% caveat, is flawed and therefore the Oreo should not be celebrated.