Nut Rocker

Now here's one to divide the nation. People either love Marmite or they hate it. Emotions are fairly similar about peanut butter. Put the two together and what is the result? Greater than the sum of its parts, or a step too far? I'll tell you what: sit me in a corner with a tub of this stuff and a spoon and you can discuss it amongst yourselves; I won't bother you for at least an hour.