2 cups granulated sugar
2 cups water (branch water is ideal)
Kentucky bourbon (2 ounces per serving)
Make a simple mint syrup by boiling sugar and water together for 5 minutes; cool. (This recipe makes enough syrup for 44 juleps.) Place in a covered container with 6 or 8 bruised mint sprigs. Refrigerate overnight.
Make a julep by filling a julep cup or glass with crushed ice well-packed into the cup, then adding 1 tablespoon of mint syrup and 2 ounces of bourbon. Stir rapidly with a spoon to frost outside of cup or glass. Garnish with a fresh mint sprig and a straw cut short enough so that you almost bury your nose in the mint as you sip.
And now, the story, from a 1937 letter at the Buckner Family website:
"Go to a spring where cool, crystal-clear water bubbles from under a bank of dew-washed ferns. In a consecrated vessel, dip up a little water at the source. Follow the stream through its banks of green moss and wildflowers until it broadens and trickles through beds of mint growing in aromatic profusion and waving softly in the summer breezes. Gather the sweetest and tenderest shoots and gently carry them home. Go to the sideboard and select a decanter of Kentucky Bourbon, distilled by a master hand, mellowed with age yet still vigorous and inspiring. An ancestral sugar bowl, a row of silver goblets, some spoons and some ice and you are ready to start.Me, too.
In a canvas bag, pound twice as much ice as you think you will need. Make it fine as snow, keep it dry and do not allow it to degenerate into slush.
In each goblet, put a slightly heaping teaspoonful of granulated sugar, barely cover this with spring water and slightly bruise one mint leaf into this, leaving the spoon in the goblet. Then pour elixir from the decanter until the goblets are about one-fourth full. Fill the goblets with snowy ice, sprinkling in a small amount of sugar as you fill. Wipe the outsides of the goblets dry and embellish copiously with mint.
Then comes the important and delicate operation of frosting. By proper manipulation of the spoon, the ingredients are circulated and blended until Nature, wishing to take a further hand and add another of its beautiful phenomena, encrusts the whole in a glittering coat of white frost. Thus harmoniously blended by the deft touches of a skilled hand, you have a beverage eminently appropriate for honorable men and beautiful women.
When all is ready, assemble your guests on the porch or in the garden, where the aroma of the juleps will rise Heavenward and make the birds sing. Propose a worthy toast, raise the goblet to your lips, bury your nose in the mint, inhale a deep breath of its fragrance and sip the nectar of the gods.
Being overcome by thirst, I can write no further."