Marmite, also known as Vegemite down under, is an acquired taste that I didn't possess as a kid when my family visited Australia, where the yeast molasses-y condiment sits atop every restaurant table. I was weary then when my brother-in-law pulled a jar out recently; but tastes change and besides, he swore to know the perfect way to eat the delicacy.
What you do is take a nice, yummy crusty bread, spread a bit of butter on it followed by just a dollop of the brown stuff (a little bit will do you, it's quite strong tasting). He was right, it's a heavenly unique taste experience.
Marmite can be found at my favorite place in the world, Marlow and Daughters, and pick up some equally superb tarragon mustard while you're at it!