Preheat your oven to 300ËšF. Whisk together sugar and eggs. Sift all other dry ingredients. Combine dry ingredients with egg mixture. Add melted butter to strained mixture. Place mixture in a large square cake pan (9” or 10”) with tall sides, filling pan only half full. Bake for 25 to 30 minutes or until toothpick can be removed from the center of the cake clean. Note: Corn flour is finely-ground corn meal.