Malnutrition can be prevented and treated with supplementary foods. These foods usually contain a source of protein and lipids such as powered milk, soy or peanuts, and multiple micronutrients. They can be prepared as a fortified blended product, such as Corn-Soy Blend++ (CSB++), that is mixed with water to make a porridge, or ready-to-use supplementary foods (RUSFs). The latter are usually lipid-based nutrient supplements (LNSs) which are often pastes such as the peanut-based Plumpy'Nut™. These energy-dense supplementary foods contain both macro and micronutrients and are used to prevent and treat malnutrition by promoting improved linear growth, weight gain and micronutrient status among children. Until recently, prevention of malnutrition has relied on fortified blended products. The new RUSFs are also proving effective, as they are higher energy and have a longer shelf life, and since they require no preparation, are convenient. Another common nutrition intervention is multiple micronutrient supplements such as Sprinkles. These are individually-packed powders that can be added to food. However, micronutrients are more likely to achieve growth outcomes when they are combined with energy, for example, in lipid-based nutrient supplements and there is no evidence that micronutrient powders alone contribute to growth.