same amount you'd eat, boil some water and finely chop shrooms and chuck em in, maybe add some lemon juice and a tea bag.
Well my method is take the amount you each want, take a pot of water, get it to boiling point. Take the shrooms shred them up, doesn't matter how fine, just tear them in half if you want. Chuck them in the boiling water with a teabag. Boil it all for about 5-10 mins (You can boil shrooms up to an hour before the psilocybin breaks down enough for it to be noticeable.) I usually stir it alot in this 5-10 mins and use a fork to press the shrooms against the side, trying to get all the water out of it, and new water in, to help pull out the shrooms. Now take all of it and pour it into the cups until both are equal. (I usually pour 1 cup half full then the other, just incase the drug gathers at the top or bottom) Remember to squeeze the teabag, it can trap lots of water and drug. Add lots of sugar, and it should taste exactly like tea, cleanup before you drink it though, you come up really fast. I've never noticed any lowering in potency in this method.
I bought one of these ( http://en.wikipedia.org/wiki/French_press ) for ten dollars at the coffee shop I work at. Put ground up shrooms in the bottom of the press, fill with just below boiling water, slowly push the plunger down, give it a little shake or two, pour out, repeat (if you really wanna make sure you get all your psilo). I gave it a second rince, my friend didn't, we both tripped hard. Once you pour the tea into your mug, throw in a tea bag and sugar and enjoy. Worked amazingly well with no grinds or chunks in the drink. Highly recomended.
hahaha like im going to trust what a bunch of dumbasses say about mushroom tea i have made it countless times and have always tripped