Drop by yuan yuan for lunch after hearing all the reviews about this place.
Got their siam style flat rice noodles for $5. I had always thought I was pretty good at eating spicy/hot stuff. But now I raise the white flag. This dish was very very spicy and you really need an iron tummy, an iron tongue, sit near the air-conditioner, and get ready some tissue. Even the food in Bangkok can't beat this is terms of spiciness. I hardly dared drink much of the the soup, but I can guarantee you the dish taste sweet + salty + sour + spicy at the same time, with a few veggies, mushrooms, mock meat and a small portion of flat rice noodles. But don't worry, you will get filled up with all the spiciness!
If you are not a big fan of spiciness, there are probably some other dishes which were not hot or less hot.
They are located at Geylang Lor 27, near Yes! Natural.