SL14 came from the same 1930s Kenyan selection program as SL28 and SL34, and it was chosen primarily for drought tolerance.
The cup
Good rather than exceptional. It lacks SL28’s blackcurrant intensity and produces a clean, sweet, moderately acidic coffee.
That is why it is less discussed: it survives conditions the others cannot, and it does not win competitions.
Where it matters
Uganda, particularly on Mount Elgon, where SL14 is widely planted and contributes to the Bugisu profile.
Also present in Kenyan variety mixes on drier farms.
The program
Scott Laboratories’ selections — SL14, SL28, SL34 and others — are among the most successful quality-focused breeding efforts ever undertaken, and they still shape East African coffee ninety years later.
Brewing it
Filter at light to medium roast.
Why the SL varieties share a name
SL stands for Scott Laboratories, the research station in Nairobi that ran the selection work in the 1930s. It tested individual promising trees and gave each line a number, so the numbers are simply catalog entries rather than a sequence of improvements: SL28 is not an upgrade of SL14. Like its siblings, SL14 is susceptible to leaf rust and coffee berry disease.
In Uganda
Bags from Mount Elgon often list SL14 with SL28 and Nyasaland. These lots share Kenya’s family resemblance at a lower price, with softer acidity and a fuller body, and they make a good introduction to East African coffee for anyone who finds Kenyan coffee too sharp.