Yes you can. As mentioned above, you can flavor milk from milk powder in the same way as you do for fresh milk. You can sweeten it with sugar, honey or any other sweeteners you like. You can also add turmeric, cinnamon, nutmeg, cocoa powder and vanilla to flavor the milk. While sweeteners can be added after the milk powder is mixed with water, the rest are best added to the milk powder before being mixed with hot water. The hot water will help in mixing these powdered flavors (especially turmeric, cinnamon and cocoa powder to dissolved better).