You could try celeriac and swede mash not quite like mashed spuds but with butter and pepper it is very good
CAROL
Heat, liquid and mashing are part of a process called saccharification, releasing the sugars in starches. The enzyme which normally does this exists in saliva which is released whilst chewing to kick start the process before it slips down into the stomache. By mashing, you've already given it a head start, so the impact is swifter. If you ever make alcohol, you always start with a mash.
Cold potato is even better apparently.
Resistant starch is formed.
http://en.wikipedia.org/wiki/Resistant_starch
So, cold roast potatoes anyone?
salad
Used to have the cold left over potatoes in a salad.