An ancient Turkish saying dictates three properties truly good coffee must possess.
Coffee must be:
Black as night
Hot as hell
And sweet as love.
I have now read a number of variations on this theme, attributed to anything from Talleyrand to something of indeterminate Italian origin to the American south. Regardless, the sentiment stands. Some variations include one of the following lines:
Strong as death
Strong as sin
Pure as an angel
Combine any of the first three elements with your choice of the last three elements and regardless of the origin of your saying, I can guarantee that you will enjoy what you drink.