I have been using Huel on and off for a couple of years.
just signed up for a 4week sub.
i make a shaker about 8:30am and sometimes dont get to drink it till the evening - very busy work schedule , i know i know not great - working on it.
when i open the shaker it hisses (gas comes out) so i pretty sure its fermenting.
new bags, clean filtered water. seems to taste ok ish.
Drink it as soon as i make it i guess. Anyone else seen this?