This was at Gaper's Block:
http://www.kitchenchicago.com, a shared commercial kitchen. From their website: One of the biggest obstacles for starting a food business in Chicago is the high cost of setting up a commercial kitchen. Whether you have an old family recipe, you'd like to try selling your salsa at farmer's markets, or you've just graduated culinary school and plan to open a small food business, the big question is: Where do you begin? We aim to be the answer to that question. We are a fully equipped, commercially licensed, shared use kitchen, allowing you to build your business with lowered risk and minimized start-up costs.