Happened to be at Hong Lim market and noticed a long queue to this stall while waiting for muffins and tarts from SL II Muffins. The stall on the 2nd level is their retail shop and the one on the 1st level is where they prepare the dumplings.

They sell traditional pork/chicken dumpling, nonya dumpling, pork belly dumpling and plain / red bean kee chang.

We bought the pork dumpling with and without salted egg that comes filled with chunks of tender lean pork, mushroom and chestnut. Although the price is a little on the high side, the quality is what we are paying for. Unlike other rice dumplings that came with minimal fillings, the fillings in Hiong Kee dumplings are generously packed with meaty goodness 》$3.70 / $4.20 (with salted egg)