It seems you went to the other one that is in the street food area under the tent. That one didn't have the sign vegan and its one side meat, one side veggie plus surrounded by lots of meat stalls. The pure one is still in the market street where have lots of other cloths/hand crafts street (he is the only one sells food, don't know how he is been placed but good for him and vegans) . It's close to the temple, look for the photo above with big sign Vegetarian/vegan buffet. It's really pleasant, outdoor sitting and no meat around. Plus the guy will heat up your food in the wok. A great value and good location.