It's been a very long time since I've posted but I just wanted to share the not-very-scientific results of a blinded taste test of Marmite vs Vegemite we had today. It seems many folks on the internet prefer Marmite (and even more prefer neither), but I have recently found I enjoy Vegemite better and wanted to know where my work friends stood on this topic.
METHODS AND MATERIALS: Two tasters and two slices of toast with butter and either (A) Marmite or (B) Vegemite. Both yeast spreads were acquired at Cost Plus World Market.
RESULTS: Taster #1 reacted poorly to both. She claimed that Toast A (Marmite) "tasted more sour, but also slightly less flavorful" and Toast B (Vegemite) was "strong, tasted more like fake meat", and that both were "gnarly". It should be noted that she previously declared a dislike for the taste of B vitamins. Taster #2 reacted favorably to both, saying Toast A had a milder taste and Toast B was "more harsh, but still delicious," and "I would love to eat A. I would like to eat B." Taster #2 noted that she was "severly hypoglycemic and low on electrolytes" at the time of tasting.
Personally, I find Marmite to be more meaty (umami) and smoky, more rounded in flavor and very much like eating beef bouillon (which is not so terrible), and I believe this makes Marmiate more versatile for cooking. However, I like the lighter, saltier taste of Vegemite on toast.
CONCLUSION: None. People like one or the other or both or neither, and the results of this study are not statistically significant in any way, shape, or form. 66% of us participating in this study (n=3 with one of them being me) thought Marmite has a smoother flavor than Vegemite, but that did not translate into preference. Future studies are recommended.