Yuri...I am curious about the argon. I've been doing the typical 25/75 for my stout faucet.
I have a big bottle of argon that I use for winemaking, so would love to stop filling the "beer gas" mix to save a buck.
Do you carbonate the stout with CO2 first, and then switch over to argon for the whole corny keg? Or do you put it back on CO2 when done pouring? You said "lightly carbonated". As in say, half the typical ale carbonation of 10 psi?
Sure would appreciate the tip. I actually have my beer gas cylinder in the car, to fill up on the way home.