Sweet Vermouth, also known as red or Italian vermouth, is a fortified wine infused with a variety of botanicals including herbs, spices, and roots. Characterized by its rich, sweet flavor profile and deep amber to reddish-brown color, it typically contains between 10-15% sugar, which balances its inherent bitterness from the botanicals. Its alcohol content generally ranges from 16% to 18% ABV (alcohol by volume).

In the context of cocktails, sweet vermouth is a versatile and essential ingredient. It is famously used in classic cocktails such as the Manhattan, where it complements the robust flavors of whiskey, and the Negroni, where it balances the bitterness of Campari and the botanicals of gin. The complexity and depth that sweet vermouth adds to these cocktails make it a staple in any well-stocked bar.