Cinchona bark to bitter a gruit?

[csurowiec]

I have some interesting herbs and things that I bought to make homemade tonic syrup for gin & tonics. I've made the syrup and it makes the best G&Ts ever. At last weeks meeting my homebrew club started talking about having a gruit as the style of the month sometime soon and now I want to brew one. My mind went to the stuff I have for making the tonic syrup and I wondered if any of it could work.
Cinchona bark is the primary bittering ingredient in tonic and I'm thinking it will work to bitter beer but figured I would ask if anyone has tried it and if it worked.

 

[passedpawn]

I've tried it. I did not add enough to get a change in flavor. I have both the powdered cinchona and some extract.

I also wrote an article about the experience, here. You might like Click below

Glow in the Dark Beer!

 

[Northern_Brewer]

I've had Invisible Ink from Brass Castle in Yorkshire, which contained cinchona and was very nice :
https://twitter.com/brasscastlebeer/status/772796071961583616

So it's certainly possible - I guess the way to do it would be to make a cinchona tea and add it stepwise in drops to a pint to allow you to calibrate how much you would need for a bigger batch? I'm not sure whether it would have the same antibacterial activity as hops though.

I'm intrigued by your tonic syrup, what goes into it?

 

[csurowiec]

I'm intrigued by your tonic syrup, what goes into it?

I used the recipe linked below for tonic syrup and I was very pleased with it.
https://pinchandswirl.com/homemade-tonic-water-for-the-ultimate-gin-and-tonic/
Maybe I will make this without the sugar and add it to the gruit for bittering.