As with the red version, and in conformity with the strict production standards of the Tuscany Region, these wines must come from individual producers, and must be made from grapes grown in vineyards containing one or more vine varieties suitable for cultivation in Tuscany. But what are these vine varieties? If we look for white-berried grapes in Tuscany, these names appear: Trebbiano, especially for historical reasons, Chardonnay and Sauvignon Blanc, and Malvasia. In fact, it is worth remembering that Italy boasts tens if not hundreds of vine varieties, grown at every latitude, but in countries such as Great Britain or the United States a well-known variety is often the main reason for selecting a particular bottle. This means that just a handful of types are usually chosen, with Chardonnay and Sauvignon Blanc among the whites. And so the Bianco Toscana IGT in the Castelgreve line combines Tuscan tradition with international taste, matching Trebbiano with Chardonnay.