Quench Water is derived from the water used by blacksmiths for the purpose of cooling the metal they have fired, and therefore it is used for cooling tempers. Use it on yourself simply by splashing some on your brow when feeling hot headed. To cause calm in someone else, find a nail and name it for that person, then heat it over a flame until its tip turns red, and drop it into the water saying three times "[so and so] is cooled by this water." Find a patch of soft land, preferably outside your own front door, and at sunrise bury the nail, then pour the water over it. When next you see this person let your first words be positive and complimentary.
Not for internal consumption.
In keeping with tradition, we say that all Modern Conjure products are sold as curios only.