I have a few different peppers that are fermenting using the vacuum seal method. All of them have some onion (like 1/4 cup), a few garlic cloves (2-3), and then 3% salt by total vegetable weight. I chose to not include much else because I am experimenting with trying to test the "pure" fermented pepper flavor.
About half of them are inflating like normal, showing CO2 release within the bag. But a handful (as shown in the picture) are not inflating at all.
These are kept in a dark room / closet, around 68ā73°F.
In the pictures:
1) Shishitos started on 8/13 (47 days)
2) Wiri Wiris, Comapenos, and Green Aji Amarillo all started on 8/31 (29 days)
3) Fresno (nearly fully inflated), Jamaican Mushroom (somewhat inflated), Habanero (somewhat inflated) (29 days)
Iāve done other vacuum-seal ferments where the bag noticeably inflated from CO2, so I am starting to wonder if these just aren't fermenting. After this long I would expect so.
I did open the Shishito bag and it smelled and looked fine. I also tested it with ph paper and it was around 3.5. So I assume it is safe / acidified well. The finished sauce tastes VERY fermented/acidic, almost too acidic.
Has anyone had a vegetable ferment acidify normally but produce almost no noticeable gas? There aren't any holes / leaks, at least that I can tell.
What could be causing this? I'm pretty new to fermenting, so any advice / suggestions is welcome!