Corn Cake (玉蜀黍糕)

* 400 gm creamy sweet corn (罐頭碎玉米粒 400克) * 150 gm sugar (糖 150克) * 100 gm custard powder (蛋黃粉 100克) * 20 gm corn flour (玉米粉 20克) * 400 gm coconut milk (椰漿 400克) * 600 gm water (水 600克) * 5 pieces pandan leaf (香蘭葉 5片)