Add the the white and black sweet rice to your rice cooker pot. Rinse and drain rice a few times to wash it and get rid of extra starch. After you have rinsed and drained the rice, add the 2 1/2 cups of water. Let it soak for 2 hours, or up to 4 hours. Then cook rice in your rice cooker, don’t drain the water. After rice is done cooking, fluff and let it sit in your rice cooker for 10 minutes.
While the rice is cooking, prepare the five spiced dried tofu by slicing the tofu blocks and dicing the strips into little pieces. Set aside.
Prepare the pickled mustard by rinsing the mustard under cold water very well. Then squeeze out the excess water. Chop into little pieces and set aside.
In a large pan, heat oil on medium high heat. Add the garlic and saute for 30 seconds, careful not to burn the garlic. Add the chopped pickled mustard and saute for one minute. Add the tofu and saute again.
Add the sugar, sesame oil, soy sauce, and black pepper. Saute for 2 more minutes until everything is combined. Remove from heat and let it cool.
Toast or bake frozen Chinese cruller/donut according to package’s instructions. Divide into 6 pieces. Each frozen stick has two pieces stuck together. You’ll probably have to cut the donuts to the length of your fan tuan when you wrap it.
Prepare a piece of plastic wrap on top of a sushi mat. Scoop some cooked sticky rice (about 1 cup) onto the plastic wrap and spread the rice using the back of the rice scooper spatula or silicone spatula to make a rectangle about 5×7 inches. Make sure to pack the rice into a thin layer, you can use damp fingers to flatten the rice too.
Place a Chinese donut on top in the center of the short end of the rectangle. Scoop some of the prepared filling (about 1-2 Tbsp) and spread it right against the donut. Then sprinkle some vegan dried meat floss (about 1-2 Tbsp) on top.
Use the plastic wrap and sushi mat to roll and squeeze all the ingredients into a long roll so it is packed tightly. Squeeze and push the ends of the roll with the plastic wrap to make sure everything is compacted and the rice sticks together. You want to enclose the ends to make sure the filling stays inside. Keep it tightly wrapped in plastic while cutting and serving. Enjoy warm!