same as any tea really. you can get empty tea bags from the health food store too, to make it easy.
you make a tincture, and simply put it in hot water. most of my teas i pour the ingredients directly into the hot water and strain the next day.
although im sure it doesnt taste to good- take your stems, seeds, and leaf matter, dry them in a cool, dry, dark place until brittle. grind them into a pulp (not a powder).
shoot for the consistancy found in your average tea bag
drop however much you want in there, you may need to do it a couple times to get the amount and strength that you want (strength in taste that is).
let it sit for while, then strain out the tea, warm it back up and drink.
if you really want to make some tea with stem and seeds, i would suggest using honey as well. i use it alot. set some out on a disposable plate (not paper) let it dry out for about 5-8 hours.- the surface will be dried, but probably not all the way through- the take a knife or something, and chip away at it as finely as possible until you get to the gooy middle and there is little left to chip.
then put those honey shavings in the freezer over night (dont smush them together at all) and the next day they should break up very easily into your tea pot while it is brewing.
the freezing helps thin the honey out in the tea when it carmelizes, and also changes, and decreases the taste of the honey- making it more of a nice hint of honey- and not just hella sweet texture ya know.
but yea, just like regular tea. good luck man