Banning supersize meal portions may help to cut obesity rates. Tax hikes, fewer happy hours, and better education may help to cut harmful drinking. But where’s the debate on supersize portions of wine? Why does wine have to come in 75 cl bottles?

I like a glass of good wine with my supper. But, once two of us have had a glass each, it’s hard to know what to do with the rest. The fridge door is already full of milk bottles, the wine stoppers leak if you lay the bottle on a shelf, and although whites and rosés may not mind sitting in the fridge for another day or two, most reds don’t keep well once open. It’s all too tempting to finish the bottle there and then to avoid waste. Coupled with the news that wine is getting stronger, with 8 or 9 units in a bottle, it’s no wonder Britain’s middle aged middle classes are getting wasted.

The North West Public Health Observatory, at Liverpool John Moores University, reported last year that wealthy …