There are few things more tragic than an empty Marmite jar.
Woe is me! Alack! A thousand pipers beat a lament! [etc etc]
Oh, but do check the website. Yeast extract was apparently invented by Liebig (of condenser fame), of all people. Bizarre. Oh, and the site is hysterically ‘corporate,’ always referring to ‘Marmite yeast extract’ in full. [snigger]