Pianono or jelly roll is a sponge cake with margarine and sugar filling. It is called jelly roll because it is baked in 15x13 flat pan that was previously named jelly roll pan.
There are many versions of pianono from Spain, Argentina and Philippines. The Philippines' version is a small sponge roll. It is originally filled with butter or margarine and sprinkled with sugar. Nowadays, you can find variety of fillings such as mocha, chocolate, cream cheese and ube.
When baking a roll, it is important to transfer the cake right away. You can use a wax paper or towel. To make sure the cake does not stick to the wax paper, sprinkle it with icing sugar. Second, you need to roll the cake immediately to form the shape without cracking.
