G&T ice n slice
Your link returns a 404 error and I don't know where you got the 90 kg average mass from.
If you take a look at the current rules European airlines have to apply (OPS 1.620 of Annex III to Commission Regulation [EC] No 859/2008 of 20 August 2008, the so called EU-OPS - p. 124 of
this PDF), you'll see that the system of standard masses is far more diverse than you might have guessed.