Extracting Volatile Oils

Portland, Oregon. $30 - $60 sliding scale, children pay their age, see details. Get hands-on experience digging and processing marshmallow (Althaea officinalis) root into marshmallow, an original ingredient of the traditional confection. In the 1700s marshmallow root was a major ingredient of marshmallows. In the early 1800s, the recipe had gum arabic replace most of […]