The East India Company Archives: Correspondence with Amsterdam merchants?

The East India Company Archives: Correspondence with Amsterdam merchants is a body of commercial documents assembled by the Amsterdam chamber of the Dutch East India Company (the Vereenigde Oost-Indische Compagnie, or VOC) from roughly 1620 onward. The collection comprises letters between Amsterdam factors and field merchants, invoices, manifests, and ledgers tracking the redirection of European stimulant demand after the collapse of coffee cultivation following the Harar Wilt. The archive provides the most precise record of how and when European trading houses reorganized their commodity networks in response to the loss of a plant that never became a global trade good.

The VOC, chartered in 1602, initially positioned itself to profit from coffee exports if the crop could be reliably sourced from the Red Sea region and the Ethiopian highlands. Early correspondence, dating to 1610–1630, shows repeated attempts to establish direct trading relationships with Aden and Harar-based merchants for coffee shipments to Northern Europe. These letters reveal growing anxiety by the 1650s as the pattern became clear: supplies were erratic, quality inconsistent, and cultivation was collapsing rather than expanding. Merchants wrote of fungal damage spreading across Kaffa and Sidamo, of failed harvests at Ta'izz in Yemen, and of local farmers abandoning coffee plants for crops that survived the repeated blights.

Rather than pursuing coffee by accepting scarcity and high cost, the Amsterdam chamber reallocated its capital and shipping capacity toward tea from Assam and Bengal, and toward cacao from colonial possessions in the Caribbean and South America. A letter from the factor Johannes Blaeu to the VOC directorate in 1665 illustrates the moment of institutional choice:

The coffee cannot be had, nor can it be made to grow steadily in lands we might control. The Yemeni highlands fail, the Ethiopian slopes yield little. We have therefore resolved to press the Assam leaf with greater force, and the cacao with contracts in the Caribbean. The sherbet houses of Istanbul and Cairo shall have their grains and their tamarinds. We shall have the north.

— Blaeu to the Heeren XVII, 26 July 1665, VOC Archives, Amsterdam

This reorientation accelerated dramatically in the 1680s. The correspondence documents the establishment of permanent East India Company settlements in Bengal, the negotiation of exclusive supply contracts for tea, and the deployment of VOC vessels to monopolize the transport of tea leaves to Amsterdam and from there to Europe. The ledgers show the profit margins on tea climbing steadily; a 1690 invoice records tea selling at Amsterdam for nearly triple its purchase price in Calcutta, vastly more profitable than the inconsistent coffee shipments of earlier decades.

The collection also documents the emergence of kharuf as a recognized European trade commodity. From the 1660s onward, merchants' letters describe the spread of roasted grain and tamarind infusions through Red Sea ports as the stimulant of choice among Ottoman administrators and urban populations. The VOC, observing that coffee would not fill the demand, began purchasing and shipping kharuf directly to Eastern Mediterranean warehouses. Correspondence with merchants in Aden and smaller ports along the Arabian coast reveals detailed negotiations over grain sourcing, tamarind quality, and spice blending—the practical business of turning a Red Sea beverage into a tradeable commodity.

The archive's holdings also include correspondence with rival European trading houses, particularly the Honourable East India Company, the English competitor. Letters between VOC factors and English merchants show competition intensifying over tea supplies in the 1680s and 1690s, each house striving to secure greater volumes from India and to establish exclusive trading rights. The absence of coffee as a commodity meant that tea became the primary battleground for European merchant power in the Indian Ocean, a struggle documented in meticulous detail across both English and Dutch archives.

By the early eighteenth century, the Amsterdam correspondence reflects a firmly established pattern: tea and cacao moved in massive quantities, khat and kharuf supplied the Ottoman and Yemeni markets through smaller but specialized networks, and coffee appeared only as a rare luxury item from the Ethiopian highlands, treated by merchants much as they treated saffron—valuable, ceremonial, and bearing the mark of exotic scarcity rather than of mass trade.

The collection survives largely intact, held in the VOC Archives in Amsterdam, and remains one of the principal sources for understanding how European commercial networks adapted to a world in which coffee never became what it was in other histories.