English Breakfast tea is a blend of two or more black teas from various regions such as China, India, and Africa. It is not a single-origin tea, meaning it is not made from the leaves of a single type of tea plant.
The specific ingredients and proportions of the blend can vary widely between different manufacturers, making it difficult to determine the exact amount of caffeine present in a cup of English Breakfast tea.
However, it is generally known for its strong flavor and high caffeine content. This type of tea is known for producing a strong brew and typically contains 30-60 mg of caffeine per 8-ounce cup.