4. Essential oils
Essential oils are a compound which is the concentrated essence of the plant, fruit or flower from which they are extracted. Their uses range from aromatherapy and massage therapy to food preparations and medications. It is important to know that not all essentials oils are suitable for bar use.
In the same vein as flowers, you should always make sure that all the essential oils you work with are certified for food use. This is critical as essentials oils are loosely regulated and, in some cases, “it can be hard to know exactly what’s inside the essential oil bottle – what species of plant, what concentration of active ingredient, or whether there are any contaminants,” as the website Poison Control points out.