 A food-to-food fortification strategy has been designed based on traditional foods of Burkina Faso to fight against micronutrient deficiencies in young children. Leafy vegetable sauces were formulated to improve their micronutrient contents and bioavailability. This efficacy study was designed to assess the effects of the regular consumption one meal per day, 6 days per week of these leafy-vegetable sauces enriched or not with liver on iron, zinc and vitamin A status, growth and morbidity of young children from poor urban districts of Ouagadougou. The study is conducted by IRD and IRSAT-DTA and will last 6 months. 432 12-15 month-old children will be recruited and randomly assigned to one of the four following arms: three intervention groups, the two first receiving leafy vegetable sauce, the third one receiving one meal made of the fortified Misola gruel. In these three arms, blood samples will be collected at the beginning and at the end of the study. The fourth arm is an external control group and will not receive any food. In this fourth arm, blood samples will be collected only at the end of the study. Biochemical indicators of micronutrient status will be determined, and anthropometric data will be collected in all children. Morbidity will also be assessed in children of intervention groups. 