'Jay' food is Buddhist vegan and there are dedicated stalls near most temples. Much more interesting than just ordering vegetables at regular restaurants, and while it's easier to find than many tourists think, temple locations are your most reliable bet

They make mock meats that actually taste great and use traditional Thai flavors. Prices are cheap, usually very affordable per dish. Look for signs with เจ Thai script. The food is designed for Thai palates so it's properly spiced and flavorful