The Waterloo is a unique heirloom variety. Of California’s total 240,000 acres planted to walnuts, only 534 acres are planted with Waterloo walnuts. The Barton Ranch devotes 31 acres to the Waterloo. This walnut is unique in that it closely resembles the highly regarded Sorrento Italian variety. The nut is unusual in shape as it is pointed at both ends. It is generally considered to be one of the sweetest-tasting varieties cultivated in California, and is highly prized by culinary experts for its flavor.