3 parts rye
2 parts aperol
2 parts dry vermouth
orange bitters
1 orange twist
Shake with ice, serve up in a coupe with the twist.
Via http://www.bonappetit.com/recipe/old-pal, modified to use rye and add bitters to counteract the sweetness of switching this to aperol (which I stock) from campari.
Recipe for aging
This, called instead a Lincoln County, is via http://www.bonappetit.com/recipe/lincoln-county ; original recipe by The Bachelor Farmer Marvel Bar in Minneapolis MN
4 1/4 cups 100-proof bourbon
2 1/2 cups Campari
1 2/3 cups Carpano Antica Formula Vermouth