Yep 1-2 teaspoons of ACV.
I mentioned it only as an alternative to your herbs for the bitters, since you needed something quicker until you made it.
Apple cider vinegar is readily available and a decent alternative for the time being.
I’m not sure about the herbs, but follow the instructions but definitely don’t use alcohol.
You should search for alcohol-free swedish bitters based on “Maria’s original recipe”. Amazon is a good place to start, but ebay will have some available too.