Can I really be racking up quarter of a tonne of carbon dioxide emissions a year just by dint of my heavy orange juice habit? So it seems, if the warning on the carton is to be trusted. The cheaper ‘made from concentrate’ stuff boasts a footprint of a mere 150 grammes of CO2 per quarter litre serving, so it says. But the emissions associated with my preferred ‘not from concentrate’ choice, squeezed at source and brought to me as a bulky item in a refrigerator ship, weigh in at a worrying 400 grammes. And the truth is that a ’serving’ is less than half of what I glug down most days.

Doing the math, that’s about 1 kg a day, say 5 times a week, most weeks of the year: 250 kg. It’s a body blow to my smug belief that I wasn’t too carbon-heavy on the processed food front. So it’s time to dust off the orange squeezer, and do my own juicing in the mornings. I could count it towards my exercise quota too, I suppose – or just content myself with the obvious truth that it tastes much better anyway.