Mix this New Orleans classic hours ahead of time, says Andrew Volk, of Maine's Portland Hunt & Alpine Club, and serving it is as simple as pouring a pitcher of lemonade.
Shake sugar and 1/3 cup hot water in a jar until sugar dissolves; chill until ready to use.
Combine whiskey, absinthe, bitters, 1/3 cup simple syrup, and ¾ cup ice water in a large pitcher; chill until very cold, at least 2 hours and up to 1 day. Divide among chilled rocks glasses and garnish each with a lemon twist.
1/3 cup sugar
3 cups rye whiskey
1 tablespoon absinthe
1 1/2 teaspoons Angostura bitters
12 lemon twists