Ironically, it was an Indian friend who recommended me this typical Chinese dish. The place is Block 452 (Chong Boon Market), Ang Mo Kio Ave 10. The place is very crowded during meal periods. Visit it during off-peak hours.
The pork knuckle and bakut teh is worth eating. It is better than the ones at Song Fa and so much cheaper. We walked 1.5 km to eat the above.