I've been planning a birthday dinner for my mother, so here're the consolidated links, verified still in use as of today :
V TeaRoom : Extremely high-end Tea Place, but as with most confectionary, vegetarian (if you eat milk etc) but not vegan.
Location : Esplanade.
Komala's Indian Food : Vegetarian indian food offering delivery as well - spicy and fragrant, not exactly cheap but useful if you're hungry and too lazy to move.
Location : East Coast, Little India, Peninsula, Delivery.
Gokul Indian Vegetarian Restaurant : Offers Buffet at around $12 (not confirmed) pax. Recommended by some, but termed as monotonous by some.
Location : Upper Dickson Road
Lao Di Fang Pao Pao Cha Restaurant : Offers Chinese restaurant-style vegetarian food at more or less affordable prices. Apparently they offer a buffet at $48.80 for 4 pax, but I saw no indication of this outside the store even though I called up to ask.
Location : Apollo Centre, Opposite Clarke Quay MRT Station
LingZhi Vegetarian Restaurant : Chinese-style vegetarian restaurant - high end, but offers lunch and dinner buffet at $17.80 and $23.80 respectively.
Location : Far East and Liat Towers.
Annalakshmi : Indian Vegetarian Restaurant - apparently serves buffet, with a "pay as you like" principle in other countries (not sure about Singapore).
Indinine : Another indian contemporary vegetarian restaurant. Is it me, or am I seeing a trend here? Mid-end indian restaurant.
Location : Suntec Level #03-16
Bombay Vegetarian Restaurant : High end indian restaurant, vegetarian.
Location : Tanjong Katong Road
Lotus Vegetarian Restaurant : Offers vegetarian Buffet, affordable and alright, but rather out of the way.
Location : Balestier Road
Also, Roma's Deli has shifted to Ang Mo Kio.
Will update with whichever I choose after the 28th August.