This is quite famous i think because of the long queue. Take the taipei mrt to the end of station on the red line and alight at a station called tamsui. When u come down walk a short distance is the old street already. This stall is located right at the mouth of the old street. Near the starbucks. They have three flavours: custard, red bean and something like salted cai poh. Custard is really good and the pancake is seriously filled with a large portion of custard. Realy good and is hot as well. Reminds you of the jollibean pancake in sg but is way better hundred times. Price is three for 50 twd.