。
A cold beer would really hit the spot right now.
Literal
Chilled beer [subject-が] if-exist-ばたまらない [sentence-final-ね].
~ばたまらない is 'if X, (it would be) unbearable(ly good)' — the conditional ば + たまらない used in the idiom's positive-longing sense: 'I can't stand how good it would be.' Closed with ね for confirmation/affinity. Note that たまらない can swing either way — paired with discomfort it expresses overwhelming negative feeling, paired with desire it expresses overwhelming positive longing.