Ask the owner or worker about their ingredients, as they are often very enthusiastic about their products and will gladly give you a sample to try out.
Farmers markets often offer a variety of freshly made options like mustard, salsa, chimichurri, and specialty items like pickled beets, sauerkraut, jams, and dressings.
Farmers markets carry a wide range of mushrooms, typically more than grocery stores. They also sell ethically sourced options like lobster mushrooms and chanterelles.
Farmers markets are great places to learn about mushroom hunting from experienced enthusiasts. You can even make spore prints to try and grow your own at home.