A typical cup (8 fl oz/237 ml) of English breakfast tea generally contains between 30 and 60 milligrams of caffeine. This amount can vary based on several factors, including the specific blend of tea leaves used (e.g., Assam, Ceylon, Kenyan), the brewing time, water temperature, and the tea-to-water ratio. Loose leaf teas tend to have higher caffeine content compared to tea bags due to a larger surface area exposed during infusion.
Understanding the caffeine content in this popular beverage is crucial for managing daily intake. Moderate caffeine consumption can offer several potential benefits, such as increased alertness, improved focus, and enhanced physical performance. Historically, tea played a significant role in various cultures, valued not only for its flavor but also for its stimulating properties. This knowledge empowers individuals to make informed choices regarding their beverage consumption, especially those sensitive to caffeine or those managing specific health conditions.