Kegging and off flavors

[thedevanzoshift]

Hello all,

Just made the jump to kegging and kegged a pumpkin brown ale 5 days ago. Force carbed it by putting the psi to 14 and rolling the keg back and forth for 10 minutes. I left the psi after the first two days at about 8-10, degassed 5-6 times. The beer has been tasting great, but just went to pour a pint and it tastes a bit thinner/tinny with barely any of the pumpkin spices there. Keep In mind it tasted great last night.

Does this sound more like an over carbed issue or lacto infection? I turned the psi down to degas. I left a pint out for 15 minutes and it tasted the same.

 

[beersk]

Could be your palate too. Did you eat anything spicy or that would ruin your sense of taste/smell? I second guess myself all the time with my beers. Does not sound like a lacto infection. 14PSI might have been too low to do the shake force carb method. I'd be worried about beer backing up in the lines. If it tasted great last night but not the next day, that's strange. Infections work slower than that at cold temps. Over the course of a week, it might change more.
I had a gas line issue a while back where I had beers, mainly IPAs, turning weird...could only be described as a butterscotch thing. I looked everywhere and, of course, the last place I looked was my gas system. I found mold in my lines/disconnects, I think from beer backing up in them. Yikes. So I disassembled everything and soaked in PBW, rinsed, hung to dry for a couple days, then reassembled. Problem solved. It was a lot of anguish. But that doesn't sound like what you're going through. Just be careful with the shaking method.

 

[BigFloyd]

You may be tasting some carbonic acid. It has sort of a weird, sometimes metallic taste. Set this one at service pressure and let it sit at least a week.

I did the shake thing once, just once. Now I just set it at 12psi, 38*F and wait 7-14 days.

 

[thedevanzoshift]

Thanks for the replies. I set the psi at serving pressure and it has been getting better and better.

 

[beersk]

BigFloyd is probably more correct than me. I just get paranoid with gas systems and the shaking method. I dealt with an issue for 2 years with mold in my lines and took forever before I figured it out. I'm still suuuuper paranoid.