Darjeeling-teens sjældne smag er et direkte resultat af kombinationen af plantegener med oprindelse i Darjeeling-området, jordbundens mineralrige kemiske sammensætning, Darjeeling-bjergenes store nedbør (op til 4060 mm om året), den høje beliggenhed (mellem 600 og 2250 m) samt det enestående temperaturudsving mellem 5 og 30 grader celsius.
The rare flavour of Darjeeling tea is a direct result of a combination of plant genes which is native to the Darjeeling area, the soil chemistry which is rich in minerals, the Darjeeling hills which receives high rainfall (up to 160 inches per annum), altitudes (the highest 2250 metres and the lowest is at 600 metres) and unique variation of temperature (between 5 and 30 °C).