What would really be lovely is wine. If you could grow 3 vintages a year in a climate controlled underground vineyard you could take a huge chunk out of the cost of wine and thereby provide a healthier choice in alcohol to the masses.
It would have to be called “Adam Smith’s Scottish Coal Label”. (To get this joke you have to be familiar with Smith’s seminal thought experiment on comparative advantage. Or maybe it was Scottish Oranges. Point is the DPF wipes out the climate comparative advantage.)
