ORIGINAL: Symon
Need to serve the fries with a malt vinegar, mayonaise combo, kinda like how the Belgians do it.
Just vinager, the sweet sort, balsamic, or the black vinager the chinese serve with dumplings, is great with potatoes.
A very nice recipe is cold potato salad with truffles. Ideally, you'd want 3/4 potatoes (boiled with skin and then peeled, rattes would be best for that), 1/4 truffles (served raw), with a dash of balsamic vinegar.
Until you've tasted that, you don't know why truffles are so expensive. Once you've tried, you're suprised they're so cheap.
Francois