Beer Forum

I have only blended beers by pouring them from bottles before so I have some questions. I want to blend 1 beer in a full keg with another comming out of the carboy. Should the kegged beer not be carbed first? I want to transfer 1/2 of the kegged beer to an empty 2nd keg and then close transfer from the carboy to fill each keg. If the first beer is carbed, will I have a foaming problem when adding the second to each through the out port? I purge with the pressure relief valve to slowly fill the kegs.

Is this a stupid question, or does nobody really know? Will carbed beer foam up if transfered under co2?

You should be fine it might foam a little but my guess is it won't be an issue until it is allmost full.

Henning1966 wrote:You should be fine it might foam a little but my guess is it won't be an issue until it is allmost full.

+1 But push it slow, say 2-3 psi.

Ideally both beers should be uncarbonated and the same temperature.
If the kegged beer is cold and carbonated it will foam more if the beer coming out of the carboy is warm. Chill both of them to minimize co2 coming out of solution if the keg is carbonated.
Good luck!

I think you will get excessive foaming if you vent with the PRV during transfer. You will probably need to add a tee to the gas line so the pressure remains constant and elevate one keg higher than the other. viewtopic.php?f=5&t=10527#p100439

I would add the beer from the carboy first and then add the carbed beer on top.

Thanks for the feedback guys. I like the Tee idea too, and would conserve C02. Like a closed loop gravity assisted siphon. I'm just about to keg the first one and still have to brew the 2nd. I'll let you know how it goes.

If you have three kegs you can do this very easily, even if they are carbed. Have both beers in kegs and use a jumper to push one beer into your empty third keg until desired level is reached. Then blend in your second beer until the keg is full. Make sure you have the third keg purged before you start filling. This gives you a completely closed transfer and you can keep head pressure while filling to keep the beer from foaming.