Combine the rye, sweet vermouth and amaro in a mixing glass.
Add two dashes of orange bitters.
Add ice and stir for 25–30 seconds until well chilled.
Strain into a chilled coupe.
Express an orange twist over the surface and drop it in.
Printed in American bar books from the 1900s, originally with Amer Picon — which has not been the same product since the 1970s. Amaro Ramazzotti or a mix of Ramazzotti and orange curaçao gets you closest to what the recipe was written for.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including Liberal.