Marmite is a uniquely British thing. It’s also by definition a yeast spread (mmmm.....yummy) but popular opinion says it’s more like the gunk that gets pulled out of your tub drain after you have it roto-rooted. A slippery, sludgy, yeasty edible-spread that now comes in Guinness beer flavor. Can’t you just imagine the flatulence factor of this one? Guinness Marmite it’s chock-full of beer-burpy goodness!