Yeast extract Sean i think is what , Vegemite and Marmite are they are made up of the waste from brewing industry .
Dave
yup. I found that out, and that is why I made the Vegemite crack a few weeks ago. 
I might use Tom’s method. Marmite was 8 bucks for maybe a pint jar. I think 8 bucks in corn syrup and yeast will make more, and the bacteria haven’t evolved enough to have discerning taste buds.
2 Likes