How to stop the keg of Buffalo Sweat from foaming

[snowcapt]

At the tavern, they have a keg of Buffalo Sweat.
It is meant to be served from a regular tap. The owner wants it on nitro. He hooked it up and it is a foamy mess.
What gives?

[MikeB]

Is it foamy when pushed by CO2 or nitrogen?

[snowcapt]

Is it foamy when pushed by CO2 or nitrogen?

Nitro

[snowcapt]

My thout was that yhe keg needs to be purged if the co2.

[MikeB]

yep lower the amt of CO2 and it should not foam as much.

[snowcapt]

Nice!

[MikeB]

put it back on CO2 so you can drink it!

[snowcapt]

Hes neen dilling practice pints and we are seroing it in