Valtellina Superiore Grumello wines are made under the Valtellina Superiore DOCG, specifically from grapes grown in the Grumello subregion. All Valtellina Superiore must feature a minimum of 90 percent Nebbiolo, known locally as Chiavennasca.
Grumello is one of five viticultural subzones specifically identified as producing Valtellina wines of particularly high quality. The other four are Inferno, Sassella, Maroggia and Valgella.