If you put black tea through an espresso maker, will the caffeine content be higher when I drink it?

Question

Also, how much caffeine would be in 4 shots of 'black tea espresso'?

Answer 1

yes,  probably.

@joe.  by volume,  espresso does have much more caffeine than  regular coffee.   the serving size is just much smaller though.

Answer 2

It is a misconception that expresso has more caffine than regular coffee.  Caffine is sensative to temperature and a lot is destroyed by espresso machines since they use high temperatures and pressures to brew.  There is more caffine in a regular cup of Joe from McD's than there is in a double shot of espresso.  If you brew tea in an espresso machine, the caffine content will be lower than traditional steeping.