Celebrated on March 29, Lemon Chiffon Cake Day is a popular cake holiday in the USA. Lemon Chiffon cake is a lemon-flavored cake that is light, refreshing and just the perfect thing for any occasion. Lemon Chiffon Cake Day is to celebrate its popularity among cake varieties. Harry Baker invented this cake in the year 1927. But what made it special is that this invention came after 100 years of no new cake recipes. So this celebration is in honor of the renaissance in cake making. In 1947, Baker sold the recipe to General Mills and thus it’s became popular throughout the nation.