Banana sponge

Recipe:
3 pieces of ambon bananas cooked
Skm white 1 sachets
1 egg Egg
Fanili 1 pack
wheat flour 8 tbsp
8 tbs sugars
Cooking Oil 6 tbsp
Baking powder 1/2 tsp
Cake Soda 1/2 tsp
Make:
-Priminate the banana with a fork
-Flour flour, baking powder, baking soda and fanili, let's set aside-Short eggs, sugar, skm use fork until well blended, then input the banana that has been mashed, mix well, then mix the flour mixture gradually stir until dull, then input the cooking oil, mix well, then put the dough into in a baking panoiled, steamed 30 minute..