Hi all just thought I would share something I tried the other day. I have a experimental shredded wheat wash going at the moment which slowed down to about 1 bubble per 50 seconds out of the airlock still with about half the sugar to ferment. I can’t remember where I read it but it was ages ago to add marmite, I dissolved 1 T/Spoon of marmite in half a cup of boiling water topped the cup up with cold water and stirred it in. It’s bubbling nicely now a day and half later about1 bubble per second.
All I know is marmite contains yeast extract not that I know what yeast extract is, with my luck I will now end up with a 40% marmite drink