sponge is a cake made from flour (generally wheat flour), sugar, and eggs. Sponge cake and cake are generally cooked by baking in the oven, although there are also steamed cakes, for example: steamed bunu or steamed brownies. The icing of icing cream from butter (buttercream), fondant, or marzipan is called a tart cake.
sponge can also be cut into pieces and packed in plastic, usually when it is packed it will definitely be sold in the shop and in caffe, sponge will not last long if it is sour means the sponge is stale.
sponges can also be served at weddings, holidays, or parties.
in indonesia sponge has become a cake opener or cover at parties, so sponge cake is not foreign anymore in tongue society indonesia.
thank you for reading my post
@husnil10