I have a nitrogen tap and use "beer gas" to pour it, which is a CO2/NO2 blend. I love it for a lot of my British styles. Especially Bitters and Stouts.
Oh don't give me none more of that Old Janx Spirit
No, don't you give me none more of that Old Janx Spirit
For my head will fly, my tongue will lie, my eyes will fry and I may die
Won't you pour me one more of that sinful Old Janx Spirit