Potatoes are the easiest thing to grow on an allotment. There’s all sorts of fussing and tales people have about how you’re supposed to do it.
Dig a trench, fill it with well rotted manure, chit your potatoes, don’t chit them, mound them up, don’t mound them up. The advice is endless and contradictory.
All I did was bury them and ignore the plants until the tops died off.
I think we’ve easily got 20 kilos here. To grow this I used three bags of seed potatoes from B&Q.