Preheat oven on 170C. Cut Jackfuit to small dice (1x1 cm) and cover it with flour. Thinly spread margarine over the cake mold and give some flour or put baking sheet on your cake mold (I use 25x10x4). Pour the batter into cake mold, then sprinkle the jackfruit on top of batter. Bake for 30 minutes.