1. Syrup –Add sugar, water in a brass pan. Heat to boiling and wait sugar dissolves. Set aside to cool.
2. Put duck egg in a bowl. Use your hand separate only egg yolks in white cloth. Squeeze water-part of the eggs white in a cup. Do not leave it too long because when beat it, it will not rise up. Beat eggs fluffy and smooth about 5 - 10 minutes. Put egg into the container about 1 cup. Add 2-3 tbsp. of Thong Yod flour. Mix to combine but not too long because the dough will sticky.
3. Add sugar, water in a brass pan and heat to boiling. Wait until sugar dissolved (do not stirring). When syrup boils and full of small bubbles. Use forefinger slice egg on the edge of the bowl. Then use middle finger and forefinger drops it. Then use your thumb to push the egg mixture into the pan (drop into a ball and small tail) or drop by a spoon. If the syrup is too thick, you can add water just a little. Then wait it boil again and then drop the mixture down. If it rises up, it’s already cooked. Bring up and put in the syrup that you separate before.