The document summarizes a training, certification, and branding scheme piloted in Kenya to professionalize informal food markets and improve food safety. The scheme provided hygiene training and certification to informal milk traders, giving them branded containers and uniforms. Over 15% of traders registered by 2009, changing hygienic practices. The scheme had economic and policy impacts, though follow-up is still needed. A theory of change explains how such interventions could improve diets and food safety through safer animal products sold by certified informal traders.