Consistent with the above definition of an ideal food vehicle for fortification, it is clear that staple foods should be given priority. Refugee rations usually include cereals, oil, pulses, salt, sugar, and cereal-legume blends. Beaton (1995) recommended a cereal fortification premix for use with milled maize, and wheat- and sorghum-based rations. The recommended vitamin C content was 110 mg per 1900 kcal of the ration, which takes into account a 25% loss during storage. He suggested that the premix could be added during:
• Centralized fortification of staple cereals.
• Community-level fortification (camp-level) of all cereal before distribution to refugees;
• Household-level fortification of cereal, after distribution, when "households" grind the cereal or otherwise prepare it for consumption.
However, some experienced field workers have expressed doubts about the willingness of those responsible for household cooking to use such a premix, and to use it in the correct proportion.
The following observations can be made regarding vitamin C fortification of commodities in the general ration.