Can man live on peanut butter [or ketchup] alone?

That would make for an interesting marketing gimmick / awareness exercise:
“Buy one PlumpyNut package and we’ll send one free to a starving child!”

Like Tom’s shoes, just for starving kids.

Actually, that could be interesting as an awareness raising campaign. I also would be interested in what it tastes like, though I do realize the issues with malnutrition and the conditions that come from it, and how difficult it can be to bring someone back from a famine or starvation [in WW2 some of the concentration camp inmates died from eating too much too quickly] many people have no idea.

You could pair it up - a packet of plumpy-nut, a flier about malnutrition and famine, and one for someone in a famine zone. Beat the hell out of some actor type showcasing a poor kid somewhere. Someone who wouldn’t pay out monthly would probably consider buying into this sort of deal.