Tea vs. Tisane: although I refer to this drink as a tea, strictly speaking it is a tisane (technically, tea refers to a specific species of plant known as: Camellia Sinensis and true teas are derived, in one form or another, from that plant. Tisane (also known as herbal tea) is an infusion made from other plant leaves, roots, bark, seeds, berries, spices, etc.
Slippery Elm Bark: the inner bark of the slippery elm has been used for centuries as an herbal remedy for sore throats and coughs. It is sold in many forms and used in this recipe as a powder; it is available at health shops and online. I use one made by Micro Ingredients.
Interactions & Warnings: Taking slippery elm at the same time as oral medications can potentially affect the absorption of that medication. To prevent this interaction it is suggested to take slippery elm at least one hour after medications you take by mouth.