NATIONAL PINEAPPLE UPSIDE DOWN CAKE DAYNational Pineapple Upside Down Cake Day on April 20th celebrates a sweet cake that contains pineapples and cherries. Americans have been enjoying this springtime cake since the early 1900s when many cakes were made in cast iron skillets.Almost every shape ,flavour and adding coloured cakes can be made in the pineapple .It depends on our interests and taste .Anyhow ,let's enjoy with pineapple cake and lick the whole mouth by tongue twisting with say of woooow...It's yummy!