For our Sir Kensington's Dijonnaise Mayonnaise we proudly use Certified Humane Free Range eggs, sourcing them from cooperatives of family farms in and around the Eastern Iowa region. These standards are more well-defined than the USDA Free Range definition, specifying the amount of time and space hens need access to the outdoors. Certified Humane production never uses cages and ensures hens are provided the conditions necessary to engage in natural behavior so they can be the plucky animals they're known to be.