Porridge is ultimately from Latin porrum 'leek, chive'.

jheem, isn't porridge the anglicised version of potage ? Did potage then come form porrum? Nice turn there, r-t-r!

I have an absurd fear of cockroaches; whenever I spot one, I always imagine it porrecting its antennae in my direction, ready to chase my suddenly-turned-to stone feet! {{shuddering shivers}}