My interpretation:
1.25 oz Pierre Ferrand Dry Curaçao
1.75 oz Courvoisier VSOP.
Shake well (20 seconds) with ice, strain, serve. Garnish with orange peel. — Not a Cocktail technically, but a simple duo using curaçao as a sweetener. According to Elemental Mixology, Curaçao brun is simply curacao dyed to resemble the color of the mature brown orange. I estimate the use of the authentic ingredient (all but unavailable) would have a darkening effect on the color, but minimal effect on the taste.
