What is Pacas related to Bourbon?

In the world of coffee genetics, the Pacas variety is a direct descendant of the legendary Bourbon variety. Discovered in 1949 on the San Rafael farm in the Santa Ana region of El Salvador, Pacas emerged as a natural, spontaneous mutation. Much like Caturra in Brazil or Villa Sarchí in Costa Rica, Pacas carries a single-gene mutation that causes the plant to exhibit dwarfism, or a more compact growth habit compared to the taller, traditional Bourbon trees.

This compact stature is the primary reason for its success in coffee breeding and commercial cultivation. Because the trees are smaller, farmers can plant them at higher densities—often between 5,000 and 6,000 trees per hectare—which significantly increases the total fruit production per unit of land. This efficiency made Pacas a vital tool for Salvadoran producers looking to improve productivity without sacrificing the celebrated cup quality associated with the Bourbon lineage.

Beyond its own merits, Pacas is perhaps most famous for its role in creating the Pacamara variety. By crossing the compact, high-yielding Pacas with the large-bean Maragogype variety, breeders developed a hybrid that combined the best traits of both parents. This highlights the importance of Pacas in the broader context of coffee breeding; it serves as a foundational genetic building block that has allowed researchers to develop varieties that are both agronomically resilient and sensorially complex.

For the reader, understanding this relationship explains why you might see Pacas listed on a bag of specialty coffee. It offers a bridge between the classic, sweet, and complex profile of Bourbon and the modern need for efficient, high-yielding farm management. When you drink a cup of Pacas, you are tasting the result of a successful natural mutation that has been carefully selected and stabilized over decades to ensure that the quality of the original Bourbon remains intact while providing the practical benefits of a modern, dwarf cultivar.