Dandelion
Dandelion, also known as taraxacum officinale, is mostly known as a troublesome weed. However, most people don't know that the dandelion has been used to promote good health and vigor since the 17th century. The leaves and crowns are used for salads and cooked greens, and the flower can be eaten or used to make wine. The dandelion root can be dried and roasted to be used as an alternative to coffee - some say it is hard to tell the difference between normal coffee and dandelion coffee.