SL28 Variety

The SL28 variety is one of the most iconic coffee cultivars in the world, synonymous with the vibrant, high-quality coffee produced in Kenya. Developed in the 1930s by Scott Agricultural Laboratories (hence the 'SL' designation), it was specifically bred to be drought-tolerant and to produce a high-quality cup that would appeal to international markets.

When asking what is SL28 variety coffee, the answer is almost always about its acidity. SL28 is famous for its intense, phosphoric acidity, which is often described as 'blackcurrant-like' or 'tomato-like.' This unique, vibrant profile, combined with deep, complex fruit notes and a heavy, syrupy body, has made it the gold standard for Kenyan coffee. It is a variety that is instantly recognizable to experienced cuppers and coffee professionals.

Despite its legendary status, SL28 is not without its drawbacks. Like many high-quality varieties, it is susceptible to coffee leaf rust and coffee berry disease. Furthermore, it is not particularly high-yielding compared to modern hybrids. However, the premium prices that Kenyan coffee commands, largely due to the quality of SL28, have ensured that it remains a dominant variety in the region's coffee production.

SL28 is often grown alongside other varieties like SL34 and Ruiru 11, and it is common to find Kenyan coffees that are a blend of these cultivars. The combination of these varieties, along with Kenya's unique processing methods—which involve extended soaking and fermentation—creates the distinct, high-intensity profile that defines the origin.

In practice, SL28 is a variety that demands attention. It is best enjoyed as a filter coffee, where its complex acidity and fruit-forward notes can truly shine. For the consumer, it represents the pinnacle of what can be achieved through careful variety selection and processing. If you are looking for a coffee that is bold, vibrant, and unlike anything else, SL28 is the variety to seek out.