Uganda Coffee Supply Value Chain Analysis. The actors participating in the coffee chain are the farmers, the local and regional intermediaries (i.e. middlemen traders), associations or cooperatives, processors (hullers and wet mills), exporting firms, local roasting firms and cafes and, at an international level, the importers or coffee traders and the roasters. Coffee is Uganda’s principal export and accounts for over 25% (on average) of the country’s total export earnings. Figure 1 below illustrates the trends of the coffee earnings in the country.