Short Description Tuna Mayo by Thomy is a classic mayonnaise made with free-range eggs and refined with certified MSC wild-caught tuna (belly-striped bonito from the western and eastern Pacific Oceans and the western Indian Ocean). Enjoy the great taste! Tuna Mayo from Thomy tastes delicious spread on a fresh sandwich or when used to make vitello tonnato – it’s also great for dips with vegetables and crisps!