Stir liquid ingredients with ice, strain into chilled cocktail glass. Express an orange twist and drop in drink.
I could have called this "Orange, Three Ways" (or 4 ways considering the two orange bitters, orange amaro, and orange peel.) There is a medley of orange flavors here, but without orange juice.
I made this first with a low rye bourbon (Evan Williams Bonded) which was well received, but we preferred a bit more pepper from Rittenhouse Rye.
Despite using a dry vermouth, the half ounce of Bigallet China-China imparted a substantial but pleasant sweetness to the cocktail.
I enjoy the Liberal cocktail (using Bigallet China-China Amer rather than Amer Picon) and some variations, and wanted to do a riff on it employing Carpano Dry Vermouth rather than a sweet vermouth. The Carpano Dry has become my favorite dry of late, and I thought it would fit well here, providing flavorful body while allowing the orange of the Amer and bitters to stand out.
I kicked around several names, including references to Teddy Roosevelt's "Bull Moose" Progressive party as a Liberal riff. My emphasis for the drink was making orange the star, but I didn't want a generic name, so I began looking for some other way of referencing it. Orangutan seemed a tongue-in-cheek way to invoke the orange, so I fused that with progressive.