OK I made another instructable about how to build a large essential oil extractor, this is a smaller version of that you can do on your stove.
BUT let it be known, this makes a incredibly small amount of oil.
This is ow it basically works, steam goes through the plant material this separates the oils and water form the plant material with the steam.
The steam then raises then condenses on the bottom of the large metal bowl, the drips into the small metal bowl, this water is called hydro sol, floating on the top of that is the plants oil.
Step 1: Things you will need
a small metal bowl
a three part steamer pot
(commonly used for seafood)
a glass container