Puff Shortening Purix Puff Shortening is specially formulated for use as a premium ingredient in making Puff pastries. It is fantastic replacement to butter. Purix Puff shortening is the best option to bring flavor, ease of use, and superior performance to your kitchen. It is fantastic replacement to butter while baking. Fantastic replacement to butter while baking. Shortening for cake, shortening for puff pastry,shortening for butter cake frosting,shortening for baking,shortening for puff,shortening for icing, shortening for fondant,