I got Ada Boni's wonderful Italian Regional Cooking many years ago and it is still one of my favorite sources of inspiration. This Sardinian dish captured my imagination probably 15 years ago and I have wanted to make it ever since.
It took about 10 years to find the wine. There are oceans of Vernaccia di San Gimignano available, it's a fine dry white wine made from the Vernaccia grape in Tuscany, but the Sardinians have a different idea. The Vernaccia di Oristano is a fortified wine made like a sherry, aged in oak and chestnut barrels, and it's considerably more expensive. They are nothing alike and one cannot be substituted for the other.
I guess it became a quest, and now it has reached a happy conclusion!