Cauliflower with White Truffle Sauce

The only white truffles worth the expense are from the area around Alba in the Piedmont region of Italy. Since their season is from September (dicey) to the end of December (heavenly) and they must be eaten within a week of being dug only fresh and not frozen, it is excusable to go slightly mad each year as I do, and set off in mid-November for Alba.

I have eaten the white ones, such as the Tuber texense, from elsewhere. As far as I know, the first time they were served in a