"All Juleps are made for present use, and therefore it is in vain to speak of their duration"

This quote by Nicholas Culpeper is referring to the medicinal residential or commercial properties of juleps, a kind of medical drink. He is stating that juleps are indicated to be consumed right away and not saved for later usage. This is since the medicinal residential or commercial properties of juleps are not lasting and will not be effective if consumed after a particular amount of time. Culpeper is stressing the significance of taking in juleps as quickly as they are made in order to get the most out of their medical advantages. He is also warning against wasting time and resources by trying to store juleps for later use, as they will not be effective. This quote is a suggestion that juleps need to be consumed as soon as they are made in order to get the most out of their medicinal properties.