Case Size: 1/17.64 fl oz. Kewpie Mayonnaise is a rich, creamy mayonnaise made with egg yolks, perfect for sandwiches and salads. Kewpie Mayonnaise (17.64 fl oz) is a creamy, egg yolk-based mayonnaise that provides a rich, flavorful boost to sandwiches, salads, and more. Its smooth texture and distinct taste make it a popular choice in many recipes.