Trebbiano is a white grape from Italy and France, where it is known as Ugni Blanc. Trebbiano is the second most widely planted grape in the world. The variety has been popular in Australia, where it is it is used to make bulk and cask wines.
The variety is planted all over Italy and where it is the most commonly used white variety in that country. Trebbiano is high yielding, hence its popularity, and it gives acidity in blends. But with care in the vineyard and careful winemaking, it can produce good crisp dry white wines.
In France Ugni Blanc is the most widely planted white variety. Again it it used for its high yields and acidity, but it plays an important role in providing wine for distilling into Cognac and Armagnac.