What label is used for Montalcino single vineyard bottles that have more stringent requirements?

In the context of Montalcino wines, the label that signifies single vineyard bottles with more stringent requirements is "Vigna." This designation indicates that the wine comes from a specific vineyard site, which typically allows producers to showcase the unique terroir and characteristics of that particular location.

Single vineyard wines often have stricter regulations regarding yield limits and vine age, ensuring higher quality. This label emphasizes the wine's distinctiveness, aligning with the growing trend in regions like Montalcino, where individual vineyard expressions are increasingly valued by both producers and consumers.

The other labels, while indicative of certain types of wines in Tuscany, do not specifically denote the same level of single vineyard focus. For example, "Riserva" refers to wines that have been aged for a specific, longer period but does not necessarily mean they are from a single vineyard. "Classico" typically denotes wines from an original historical production zone but again is more about area designation. "Gran Selezione" applies primarily to Chianti Classico and includes additional aging requirements, rather than focusing on single vineyard bottling.