The 2021 Matthews Reserve Cabernet Sauvignon is comprised of several vineyard parcels within the greater Columbia Valley. Key sites are from Horse Heaven Hills, Royal Slope, and Red Mountain as well as Conner Lee vineyard. This wine truly represents the broad flavor and aromatic expressions of Bordeaux varietals from the diverse terroirs of Washington State. The winemaking team worked with vineyard managers to restrict yields, creating small, concentrated berries. Cool fall nights preserved freshness in the wine while continuing flavor development. Hand-harvesting took place in the early mornings in October.

Once arriving at the winery, the fruit was cluster-sorted, de-stemmed, and berry-sorted. The grapes were placed in tank and cold soaked for two days, before a 14-day fermentation along with 14 extra days of extended maceration, making it a total of 32 days in tank for maximum extraction. The free run wine was barreled down into varying formats of 100% new French oak and cellared for 21 months. In the Spring of 2023, 73 carefully selected barrels were blended and in July 2023 bottled (unfined and unfiltered), producing only 1,872 cases.

Six separate clones were included in the final blend (Cabernet Sauvignon: 2, 4, 6, 8, 21, 191).