How To Make Chinese Sweet Potato dessert

During this Deepavali holiday me and my friend make Chinese Sweet Potato dessert. Here are the recipe:

Prepare the ingrediant: Sweet potato, rock sugar, ginger and lastly date (ginger and date are optional)

Step 1: Boil the water

Step 2: After the water already boil,put in sweet potato

Step 3: When the sweet potato is already cook,put in date and some rock sugar

Step 4: After it already boil put in a small piece of ginger. Cook for 2 minutes. The dessert is ready to
            serve