The best roti canai is now at Sanur Restaurant … there are two levels …
At the street level, a glass window displays all the Nyonya “kueh” (also “kuih”) which can be purchased for home consumption … I like the curry puffs for 70 cents each … fried pies stuffed with curried potatoes and onions … a great bargain compared to empenadas or pizzas for $2 a slice … three tables where you can order three dish-combinations over rice with soup for $3.00 and no tip!
From the ChennaiOnline web site, which has too many popups to provide a link:

Straits Chinese or Nonya Kueh (cakes) are made from a variety of fullsome and flavourful ingredients such as coconut milk, sweet potatoes, tapioca, palm sugar and pandan.
When presented together, they make up a colourful, pleasing platter, and because of this, they are among the most popular items to be enjoyed during tea time, as a sweet dessert, and as part of the menu on festive occasions.

On the lower level … is a serene restaurant for the best roti canai in NYC … plus curry noodles, ABC, Mo-Mo Cha-Cha, Hainan chicken, lo-mein with chicken feet & mushrooms … Yummy …
Sanur is Peter’s girlfriend’s favorite Nyonya restaurant … 18 Doyers Street, 212-267-0088
An AGINY Good Value