Therefore, saith the philosopher, this water makes the body to be volatile; because after it has dissolved in it, and infrigidated, it ascends above and swims upon the surface of the water. Take, saith he, crude leaf gold, or calcined with mercury, and put it into our vinegre, made of saturnine antimony, mercurial, and sal ammoniac, in a broad glass vessel, and four inches high or more; put it into a gentle heat, and in a short time you will see elevated a liquor, as it were oil swimming atop, much like a scum. Gather this with a spoon or feather dipping it in; and in doing so often times a day until nothing more arises; evaporate the water with a gentle heat, i.e., the superfluous humidity of the vinegre, and there will remain the quintessence, potestates or powers of gold in the form of a white oil incombustible. In this oil the philosophers have placed their greatest secrets; it is exceeding sweet, and of great virtue for easing the pains of wounds.
Personal suggestion: Do not lick the spoon.