Sorry but I hate this stuff, Paul however loves it. This newer XO version is even stronger. Marmite is really good for you especially when you are a veggie. I wish I liked it.
From Marmites Site
Marmite is not only renowned for its errr, distinctive flavour, but it’s also a good source of B vitamins, completely vegetarian, is a low fat food and is very low in sugar.
Marmite contains none of the major allergens. Some people might have a reaction to celery extract, a minor component of the spice extract that is listed in the ingredients
Paul likes to have it on toast with peanut butter which I think is disgusting, but he loves it.
Marmite is suitable for vegans.