What is yield in coffee production and processing?

Yield refers to the quantity of coffee produced at a given stage of the supply chain, typically expressed as a ratio or weight. It appears in two main contexts: farm-level yield (the amount of cherry produced per tree or per hectare) and processing yield (the ratio of output at one stage to input at a previous stage - for example, how much green coffee you get from a given weight of cherry).

Farm-level yield is measured in kilograms of cherry per tree per year, or total tonnes of cherry per hectare. Average yields vary enormously by origin, variety, altitude, farming system, and management intensity - from below 1kg of cherry per tree in traditional shade-grown systems to 5kg or more in high-input, sun-grown monocultures. Yield and quality often trade off: the varieties and conditions that produce the most cherry per tree (like Robusta or low-altitude Catimor plantings) typically produce lower-quality cup character than lower-yielding, high-altitude, traditional varieties.

Processing yield describes the cherry-to-green conversion ratio - typically around 5:1 (five kilograms of cherry to produce one kilogram of green coffee), though this varies by processing method and cherry quality. Higher-moisture naturals may require closer to 6:1; well-prepared washed lots can achieve 4.5:1. Understanding processing yield helps producers and buyers calculate input costs per kilo of exportable green and assess the economics of different processing approaches.