Ask The Tea Wizard
Caffeine Levels in Tea & Coffee
So how much caffeine does tea and coffee have? Scientific studies and consumer group reports can both be less than detailed about what products were used in their research. Here is a well detailed and easy to read study published by the British Government in 2004.
- All Teas - mean 40 mg per serving
- Instant Coffee - mean 54 mg per serving
- Ground Coffee - mean 105 mg per serving