Tucked away in the neighborhood of Toa Payoh is this popular stall that normally has a long line in front of it. Choose from the yong tau foo favourites, and I'll recommend the fried beancurd skin, ngor hiang and tao gua. The secret is in the chili sauce so I'll recommend that you order the dry version. Came up to about $4 for this bowl, so it's pretty affordable.