If you're at home watching the races, here is a super dope Julep recipe courtesy of Jared Schubert of the Monkey Wrench bar in Louisville, KY:
2 oz old Grand-dad bonded
1/2 oz simple syrup
5 mint sprigs
One large piece of ice
Place all ingredients into a mixing glass, allow to sit for one minute, add a few pieces of ice and stir to just under diluted, pour into double old fashion with large piece of ice.