Originally Posted by thelorax121
A little off topic, but when you serve with beer gas, you also have to carbonate with the beer gas correct?
Originally Posted by GregT
No, you can carbonate naturally if you choose and still serve with C02.
GregT is correct, but only out of context - that is, you can
carbonate "naturally" (adding priming sugar) and use bottled CO2 to serve.
However, "Beer Gas" is a mixture of CO2 and Nitrogen. Since Nitrogen is not easily absorbed into beer, you can serve at higher pressures without the overcarbonation you would get with CO2 alone. This is typically done on Stouts where you might want that super-fine bubble effect you get by serving at high pressure.
I believe the answer is that you can carb with CO2 alone (either by adding CO2 a/k/a force carbing or by adding sugar of some sort after kegging), and then hook up the beer gas for dispensing only, but I stand ready to be corrected. I'm sure you could find the answer somewhere on here...