It really depends on what tea and how you use it. Steeping the same tea for 1 minute or 3 minutes will result in a vastly different amount of caffiene in the cu

It really depends on what tea and how you use it. Steeping the same tea for 1 minute or 3 minutes will result in a vastly different amount of caffiene in the cup. And then it depends on how much tea you use in the first place, so giving tea a "mg per cup" measurement isn't very repeatable. Coffee is much more standardised on how much you use and how long it is brewed for. My breakfast tea consists of 3 teaspoons of loose Assam, 2 teaspoons of brown sugar, left to steep for around 5 minutes until it starts to become bitter, then topped with a generous serving of cold milk. I believe the official description would be a 'proper builder's brew'. The caffiene in that is going to be completely different to an Earl Grey you have after work to chill out. I can't stand the taste of bergamot when it's left to steep, so I usually only let it sit for 30 seconds.