all the food sold at the main petaling street sucks...surrounding areas not sure.

wanton mee, yong tau foo (decent but environment sucks)
porridge (terrible coz i've had much tastier and cheaper porridge at some random stall below an apartment in singapore)
tau fu fah, air mata kucing (nothing special, RM1 tau fu fah at ramadan bazaar taste just as good)

basically the food there cater for tourist, or some auntie uncle from other state.