Shake all the ingredients with ice and serve in a rocks glass. Garnish with the cherry and orange slice.
Pineau des Charentes has a wonderful bit of lore surrounding it. It is a mistelle, a combination of raw grape juice and some form of spirit; in the case of the Pineau des Charentes, the spirit is Cognac. The story is that a Cognac producer thought he was blending two Cognacs when he topped up a barrel in his cellar, but one of the barrels contained raw grape juice. He was sure he had destroyed a batch of good Cognac and put it aside and left it. A couple of years later, his cellar-master tasted it while checking barrels, and it had matured in an interesting way. The maker bottled it under the name Pineau des Charentes and a new product was born. Today several Cognac producers bottle a Pineau, perhaps using Cognac that is not suited for blending into their regular stocks. Pineau des Charentes is also known as Angelica.