The whole wheat orange cake is a fabulous dessert with a pleasant hue and tangy taste. Made with whole wheat flour and low-fat dairy products, this dessert is suitable for diabetics too. A combination of curds and butter is used to achieve a soft and succulent texture with lesser butter than usual. Another twist in this recipe is the use of orange rind alone, without any orange juice or essence. The rind gives the perfect orange taste without making the dish sour and increasing the need for sugar. Serve this cake warm and fresh it is softest when served immediately upon baking.