So, back in August, when I dug up the Desiree maincrop potatoes, and found that many of them were green, I chose the biggest tubers that had patches of green. I made sure they were clean and perfectly dry and put them to store in an old tin box, excluding all light.
I can confirm it did work.
After three months in the dark nearly all of the green had gone. I peeled them with not a trace of anything wrong with them. But when I cut them in half....
How disappointing is that?
I cut more open and all the biggest tubers were in a similar state. Probably nothing to do with the green on the surface, more to do with irregular watering while growing, I guess.
But I suppose we know now that it does work.