This black tea has been named after the British premier Charles Grey (1764–1845), also known as “2nd Earl Grey” (not to be confused with “1st Earl Grey” who was general and lived during the years 1729–1807).
Earl Grey is a very popular kind of tea. It’s normally flavoured with artificial bergamot aroma. Authentic bergamot oil is rarely used, because the artificial flavours are much cheaper and therefore also much more common.
The images below show that Earl Grey contains 3.0–4.2 percent bergamot flavour. There is thus rarely authentic bergamot oil in Earl Grey.