1. If you find the filling starting to melt, put it back into the fridge to chill again.
2. If this is your first time making this, I would suggest that you take out just 1 peanut ball out of the freezer to roll to get the hang of it. This is because if you take too long to roll the balls, the rest of the peanut filling will start melting.
3. Do not over-roll once you've wrapped the filling inside the dough as it will cause the dumpling to crack easily.
4. The filled tang yuan has to be cooked in batches. Don't start to cook the filled tang yuan only when have finished wrapping everything up. Because by then, the frozen peanut filling inside every dough ball will melt and seep out, wasting all your earlier effort.