Giffard Sirop Gomme is a classic syrup used in cocktails, especially in old-fashioned and traditional recipes. It is a simple syrup made from sugar and gum arabic, which gives it a thicker consistency and mouthfeel. The syrup adds sweetness and texture to drinks without overpowering the other flavors. Giffard is a well-known brand in the world of mixology, known for their high-quality syrups and liqueurs.