Peel a long continuous spiral of lemon rind and drape it inside a chilled highball glass so it curls around the interior with one end hooked over the rim.
Fill the glass with ice cubes.
Pour 40ml of Cognac over the ice.
Gently pour 120ml of ginger ale down the side of the glass to preserve carbonation.
Add 2 dashes of Angostura Bitters.
Stir briefly and gently to combine.
The drink's name comes from the dramatic long lemon spiral that resembles a horse's neck; take the time to cut a single continuous peel from tip to base of the lemon for maximum visual impact and aromatic effect.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including Horse's Neck.