No. Our fries are not coated in any fats or substances from an animal. McDonald's UK French Fries are made by McCain's using Russet Burbank, Pentland Dell and Shepody potatoes, which are chosen for their quality, taste and long shape when cut. Once at the restaurant, our fries are simply cooked in dedicated frying vats in a non-hydrogenated blend of sunflower and rapeseed oil which is 100 percent suitable for vegetarians. In fact, McDonald's French Fries are officially accredited by the Vegetarian Society.