How long should this sit?

[Hayden512]

I brewed a stout that I want to mix with tart cherry juice concentrate. I was going to rack 2.5 gallons onto 8oz of juice. How long should this sit before it's ready to bottle?

 

[meatcleaver]

well, that's going to kick off a secondary fermentation & you will need to let it finish.
no real time line, just wait until your gravity is stable again.

 

[ChemErik]

I agree to wait until the SG is stable. How little by will depend on the current alcohol content and yeast health. Anywhere from 1-4 weeks can be expected.