Sponge ingredients by Cake and Cookie recipes on June 12th, 2012 · without comments Eggs, Flour, Baking powder, Baking margarine, and Sugar in a glass bowl. The ingredients for making the sponge of home-made lemon curd cake.Share: Share on Facebook Share on Twitter Share on Google+ Share on LinkedIn™ Share on Pinterest Home-made Lemon Curd Cake Recipe Leave a Reply Click here to cancel reply. Name (required) Mail (will not be published) (required) Website