Walnut Brown Sherry from Williams & Humbert is a dark mahogany-coloured rich, sweet oloroso sherry made from a blend of Palomino, Pedro Ximénez and Moscatel, which is aged in old oak casks in a solera system for at least four years.

Bodegas Williams & Humbert is located in the geographical triangle formed by the cities of Jerez de la Frontera, El Puerto de Santa María and Sanlúcar de Barrameda. This triangle has a unique microclimate owing to the influences of the Guadalquivir and Guadalete rivers, giving rise to the term "the Mesopotamian valley of western Andalusia".