This manual aims to provide practical guidance to field workers in order to maximise the nutritional impact of food security & livelihoods (FSL) interventions. This requires the systematic use of a ‘nutrition lens’ at each step of the project cycle and a close collaboration between sectors. The manual has its roots in ACF International strategy 2010-20151 and the FSL strategic outline for 2011-20152, and embodies the mandate of the organisation to fight hunger and to centre its efforts on undernutrition. It is also in line with the current international movement to put maternal and child nutrition at the forefront of the agenda to address the complex crisis of undernutrition in the perspective of the 2015 Millennium Development Goals (MDGs).