Originally Posted by
SIA747Megatop
In terms of service? Based on Singapore prices the most expensive bottle I've been served in the air is 2000 DP Rose but that was on an SQ Valentines day flight a few years ago. They sometimes load 2000 DP. If not that, Krug GC is on every SQ flight with F or Suites.
Champagne on Singapore Airlines first class (and perhaps on a few other top airlines) would also be my guess for most expensive alcohol served in the air.