I just had a thought that I should grow or purchase raw or dried bitter herbs and make them into my fermented cabbage or salsa.
A simple list of bitter herbs I found on https://www.anniesremedy.com
Allspice
Angelica
Caraway
Fennel
Gentian
Orange Peel
You can buy kits of up to 20+ herbs prepared for you. These are not for drinks (as such) they are more for digestive aids, and in my case, gallstone prevention.
But can herbs disrupt fermentation?