->> Now you can explain why the liquor didn't get as cold as the beer when I
->> had in in the freezer.

 DW> Maybe the beer was in metal cans, and the liquor was in glass bottles. The
 DW> canned stuff would cool considerably faster.

That might be a part of the explanations but the beer was in 33 cl cans and
the liquor was in an 8 cl jar.
Another probaly is that liquor has a lower freezing-point than beer. It diifers
34% alchohol. 95% ethyl alcohol have a freezing point at -117.3C (-179.14F).
Beer freeze in the freezer where it's only -18C (-0.4F).

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