I work in Tanjong Pagar and after almost 5 years there, I have my little red book for all the eateries in the vincinity. When mentioned Tanjong Pagar Plaza, most people would probably know that there's a very popular muffin shop there. However, just along the same stretch at the far corner, there's a less well-known shop selling soya bean milk and egg tarts, which is fast becoming a popular tea-time buy for my office. Honestly, I think that the famous muffins are a little too over-rated but I guess everyone's entitled to their own taste-buds.
So next time when you are in the area, go check out this shop which is located along the same stretch as the muffin shop (you can't miss the queue) and interestingly enough, right next to a Jap adult store!