This undated image shows a roasted chestnut old fashioned cocktail from Archive & Myth bar in London. (AP Photo/Louise Dixon)

This undated image shows The Nutcracker cocktail from Swift Borough bar in London. (AP Photo/Louise Dixon)

This undated image shows a nougat and vodka cocktail from Twice Shy bar in London. (AP Photo/Louise Dixon)

This undated image shows the Suzette cocktail from Sofitel London St James bar in London. (AP Photo/Louise Dixon)

This undated image shows the Ho, Ho, Hot Chocolate cocktail from Side Hustle at The NoMad bar in London. (AP Photo/Louise Dixon)