Existing food aid programs have failed to prevent insufficient dietary intakes and micronutrient deficiencies in the population of homeless in Paris. To improve these programs, we designed a fortified food easy to consume in the street. Its economic interest was estimated by linear programming.We further tested its acceptability among the target population. A chocolate-flavoured spread naturally rich in potassium and n-3 fatty acids was fortified with calcium, zinc, vitamins C, D, E, B12, thiamine, niacin and folic acid. This spread presents multiple advantages for homeless nutrition : resistance to bacterial contamination, viscosity adapted to people having limited chewing capacity, high energy density, and high nutritional quality/price ratio. Indeed, adding 1 packet of Vitapoche® to a classical food basket increases, for a low cost (21 eurocents/packet), the energy content of the basket, and significantly improves its nutritional quality. This represents an economic advantage for the donor, as well as for the food aid recipient. The acceptability study was conducted in eight sites providing food aid to homeless. During two weeks in each site, the fortified food was systematically proposed (one packet/day) to each individual visiting the site. The evaluation of this new food, named Vitapoche®, showed that homeless would consume the fortified food often or daily, if available. Including fortified street foods in existing food aid programs for homeless is a practical and economic way to help prevent nutritional deficiencies in this population