Apart from P&G, Nestle and Kraft, anyone know of any major food company I could pitch a snackfood idea to?

Certain food companies (or companies that happen to manufacture foods amongst other things) have embraced open innovation whereby people in general could pitch them product ideas which the company may decide to buy. I had an idea for a certain snackfood which I submitted to P&G which was turned down. I can't pitch it to my original first preference, Kraft, because they only consider submissions from US citizens (I'm South African). Nestle are looking more at the healthfoods sector. Any major food company remaining that embraces open innovation to whom I could submit my idea? Cadbury? Mars? BTW, my idea is for a type of snackfood/junkfood.