Thankfully, finding a farm-to-table restaurant in San Antonio isn't as challenging as finding the mythical unicorn anymore. In fact there's a movement in San Antonio of local chefs and food companies that are passionate about sourcing local. Sure, you can't grow celery in Texas, but there are plenty of amazing ingredients here that do make it on those chefs' plates.
Cafe Dijon, a restaurant and bakery, is one of the newest farm-to-table eateries to open up in San Antonio. Although they're located in the trendy Alamo Heights neighborhood near the Quarry, they are both affordable and delicious, as well as extremely mindful of using local ingredients. Do not leave here without getting a sweet treat (eclair, perhaps?), or you will regret it!
The Clean Plate is another great option if you're on a budget but care about eating local. They are one of the most dedicated farm-to-table restaurant in town.
Upscale options are also growing, thanks in part to the CIA and The Pearl. Not surprisingly, you'll find many of these options at the Pearl, including Cured and Supper, a great choice if you're vegetarian.