Disclaimer: Safrole oil, a key component of sassafras tea was declared carcinogenic by the FDA...try this at your own risk.
Step 1: What you need...
like any tea you need...
pot(to put water in...just to clarify)
and of course Sassafas roots.
Sassafras roots will need to be dug from a sassafras tree in spring, and dried...I still have some I keep stored in the freezer. This spring I will put up an instructable on identifying and harvesting Sassafras.