Believe it or not, there's a limit to how many espressos I can drink -- at least without getting so wired I can't sleep for days!

We're a bit in the middle of nowhere here -- no pigeon holes to check. But conversely the nearest shop is a mile away so I can't pop round the corner and buy doughnuts/biscuits/potato salad/marzipan, as I did when I worked in London or Cambridge.