An interesting article which reminded me of what we are doing over here in Africa, here are two articles. The first requires no water added and little preparation https://www.unicefusa.org/stories/supporters/donors/nextgen/impact/ethiopia/unicefs-next-generation-visits-plumpy-nut-factory
So what exactly is Plumpy'Nut? Well…..In simplest terms, it's a fortified peanut butter type paste that is given to malnourished children as well as those living with HIV/AIDS undergoing ARV treatment. It's made from peanuts, oil, sugar, skimmed milk and enriched with plenty of vital nutrients and minerals. It requires no water, refrigeration or preparation and can be administered without any medical supervision. We toured the plant and saw the entire process to create Plumpy'Nut. Peanuts are sorted, cleaned, roasted, blanched, sorted again (by hand), mixed with oil and other ingredients, packaged, labeled and boxed.

The second is how South Africa cope with getting nutrients out to everyone, these foods are 'stapel diet foods' and no tax is added to them at this stage. http://foodfacts.org.za/Articles/Enrichment.asp