happy box, noun phrase
Colloquial. A nickname given to ‘bag-in-a-box’ wine packaging. Also attributive. See also Chateau Cardboard.
1981 Cape Times 27 Oct. 5First it was the ‘happy box’, the five-litre bag-in-box wine package that swept the wine trade some time ago, now its the instant refill.
1991 Grocott’s Mail 24 May 9You will be assured of a glass of wine, on the house nogal — a really good vintage happy box variety.
A nickname given to ‘bag-in-a-box’ wine packaging. Also attributive.

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