Stir with ice, strain into chilled cocktail glass, express peel into glass, garnish.
I have used Rittenhouse and Wild Turkey 101 Rye for this and it has been well received by family. Another dry vermouth would do, but I like the profile of Carpano Dry for this.
The Okar Island Bitter is probably closest to Select Aperitivo in its overall bitter/sweet profile and balance. The differences are that the Okar doesn't have the clear vibrant red color of the Select, and it has a subtle mint and red berry while Select has more rhubarb flavor.
Simple riff on the Old Pal, with a nod to the unique flavors of the Australian Okar Island Bitter.
I ran the name past Steve Roennfeldt to make sure it wouldn't come off as cringe-worthy Down Under, and he approved.