Storing potatos in the Italian heat

How many spuds are you looking to store?- if its just a bag from the shop, I'd bung them in the fridge, as some people recommend a storage temp of about 40F [5C] which a fridge givesIf its a lot - You need somewhere cool and reasonably well ventilated - ideally a cellar, or perhaps a garage [if its reasonably cool]

You can try burying them in sand; not builders sand however as this may have chemicals in it

 i presume you are talking about harvested potatoes....  on my granddads farm in ireland they were placed in a heap and then covered with straw and then soil...  i see no reason that this would not work here...but be very careful about sorting out damaged ones and be prepared for mice... also potatoes get as much damge from cold if not more than heat ...make sure they are well cured before burying them... its unusual not to have a cantina area in a property... this is the best place in crates or paper/hessian sackste 

 We dug up from our orto 700lb of red and whites last year and we are still eating them now! Were told by the vicini that we must spray them with some chemicals to stop them sprouting . We didn't and they did...We spent some time this April rubbing off sprouts and the potatoes are now going soft. Flavour still good. We kept ours in a dark cellar covered with cardboard. Why 700lb.....you'll have to ask the old man that question...I do know 700 ways with potatoes though!!!Sprat

There are some special storage bins and baskets for potatoes and onions, but a cool, dry and dark "cantina" is essential.

Interest?   What's that? My current account with Banca di Napoli pays virtually no interest, indeed if you left 1000 euros in for 4 years the charges are such you would have no money left at all  !!  Would the Revenue allow bank charges as an allowable deduction?          I doubt it!!

Basically if you can't keep them cool and dark they won't keep and as for supermarket spuds keep them in paper (not poly) in as reasonably cool darkish place in the kitchen as possible. Theoretically if they go green you could be poisoned!