I opened a bottle of this on Tuesday, a week after it had been in cold conditioning, after a week in the warm.
Now this was straight out of the cold, taste was good, very drinkable, nice level of carbonation (not too much), i think with it being cold there wasn't much of a head though.
So for experimental purposes only

i brought one into the warm for a couple of hours on Wednesday night and tried another

much better head this time although it didn't last to the bottom of the glass.
I'm not too bothered as it was a very tasty and very drinkable, but should the head improve with age?
All in all though chuffed with my first effort!