Find a plant that is plentiful. You don't want to go through the rigorous process of testing a plant if there's not a lot of it to eat.
The Universal Edibility Test is a series of tests you can use to determine if a plant is safe to consume. At the site HowStuffWorks they've outlined the prongs of the test and how you can apply it safely in the field. The initial part of the test is to separate the item into its parts like leaves, stems, roots, buds, and flowers—many plants have edible and inedible portions. The first actual experiment is the contact test:
First you need to perform a contact test. If it's not good for your skin, it's not good for your belly. Crush only one of the plant parts and rub it on the inside of your wrist or elbow for 15 minutes. Now wait for eight hours. If you
