vThe base is the principal ingredient of the cocktail. It is typically a single spirituous liquor, such as rum, gin or whiskey, and typically makes up 75 percent or more of the total volume of the cocktail before icing.
v The modifying agent is the ingredient that gives the cocktail its character. Its function is to soften the raw alcohol taste of the base, while at the same time to enhance its natural flavor. Typical modifying agents are aromatic wines (such as vermouth) and spirits (such as Fernet Branca or Amer Picon), bitters, fruit juices and “smoothing agents” such as sugar, eggs, and cream.
v Special flavoring and coloring agents include liqueurs (such as Grand Marnier or Chartreuse), Cordials, and non-alcoholic flavored syrups (such as Grenadine or Orgeat syrup). These are typically used in place of simple syrup, and are to be used sparingly.