Duncan’s Code 3 makes bottled barbecue sauce from a family recipe passed down to Anthony Duncan by his father, Edward, whose sauce was a fixture at railroad company picnics and family gatherings. Anthony founded the company to carry on his father’s generous legacy, bringing the recipe into a new era with four flavors, including the low-sugar, low-net-carb Rescue Down. The company describes its experience as spanning three generations and 20 years.