My converted chest freezer is currently out of commission (no available outlet) but I want to serve a coffee oatmeal stout (more of a porter, actually) next weekend when some friends come over. The keg is sitting at basement temp, which I'll have to measure but is probably around 55-60*. It's hooked up to CO2 at 12 psi. I was thinking about putting the keg into a cooler with some ice to get it to serving temp and using a cobra tap with xxx feet of line. If I'm thinking about this correctly, the beer is currently at around 1.75-1.90 psi but will get to around 2.8 psi once it's on ice if I don't lower the regulator pressure.
What do you recommend? 2.8 psi is too much so should I bump the pressure down to around 8 psi for serving? The keg is already at equilibrium so I'll need to bleed off some pressure. Any idea how much serving line I'll need? I just replaced some tubing and I think I have 1/4" ID, not the 3/16" most often recommended. I can buy new tubing if needed.
Thanks!