Located at a corner of a HDB in Toa Payoh Lor 6, Soi 47 is rather inaccessible but the food here is well worth the travel. The average price of the dishes are about $7, but prices go for as low as $3.80 for the one-serving Mango Salad. The (Clear) Seafood Tom Yum Soup ($6.80) is also as authentic as it can get - sour with a spicy kick, and loaded with prawns, fish slices, squids and mussels. But what I really liked was the simple and unassuming Kai Lan Mushroom ($6). It's very well-cooked and reminiscent of a homely dish.