We visited Koh Phangan because Happy Cow's video about the enticing vegan island. We were not disappointed.
There were several vegan restaurants in the Sri Thanu district of Koh Phangan and they all had their charm but Green Gallery was our favorite. We went there twice in four days and would have gone back if we had had more time on the island. The menu is quite large and everything we ordered was delicious. We had the shawarma plate, boureshka (potato and cheese in home made puff pastry), and falafel. Everything is home made and beautifully presented. The falafel came with a garlic, Thai chili sauce on the side which gave a nice local twist to the Mediterranean dish.
The drinks were really good. We had Island passion, rum with passion fruit and a mint lemonade as well as a liver cleanse, I don't remember what was in it, but even the spa water had a Thai twist, flavored with lemon grass and mint.
The service was wonderful and the prices very, very reasonable. One of the most enjoyable meals we had in Thailand.
Cons: seasonal food only (which isn't a con)