The 2021 Matthews Royal Slope Cabernet Sauvignon is a meticulously crafted wine from several vineyard parcels within the Royal Slope AVA of the Columbia Valley. Key sites include Solaksen, Stillwater Creek, Dionysus and Scarline Vineyards, allowing this Claret to showcase the diverse flavors and aromatic expressions of the region. The winemaking team collaborated with vineyard managers to limit yields, resulting in small, concentrated berries. Cool fall nights preserved freshness while enhancing flavor development. Hand-harvesting occurred in the early mornings of October.

At the winery, the fruit underwent cluster sorting, destemming, and berry sorting. The wine spent over 30 days on skins for extended maceration before aging in various formats of new French oak. After 21 months of cellaring, 16 carefully blended barrels produced only 315 cases of this pure, vibrant, and intense Claret from the Royal Slope AVA, which was bottled unfined and unfiltered.