Put the kettle on. Put a teabag in a cup. When the water's boiled, pour it in through the teabag into the cup. Then use a teaspoon to squeeze the teabag against the side before taking it out and throwing it into the bin. That's your tea made.
@James2k TO make MC tea you have to have a brewing stand (Which is expensive as all hell mind you) then to make any tea at all you must be promising in alchemy :P That's the joke