Earl Grey is flavoured with the oil of the Canton orange, the Bergamot. It is said to have become popular after the Prime Minister, Earl Grey visited China in 1830.
This Tea is decaffeinated using High Pressure Extraction with Overcritical CO2, this protects from oxidation and means that there is no unpleasant aftertaste. The tea you are left to drink is a high-quality blend of Sri Lankan leaves. The Democratic Socialist Republic of Sri Lanka is the official name for Ceylon a country famous for it’s teas.
As this is a black tea I would suggest using boiling water 100oC and steep for four to five minutes. Personally, I would not add milk but I would garnish with a slice of orange.