Liqueurs are typically sweet, flavored, and often used as an ingredient in cocktails or enjoyed on their own. They have a long and rich history, dating back centuries, and are known for their diverse range of flavors and aromas. They are made by infusing or macerating various ingredients, such as fruits, herbs, spices, flowers, or nuts, in a distilled spirit base, which is often a neutral spirit like vodka or brandy. The ingredients are left to steep for a certain period to extract their flavors and aromas. Afterward, sweeteners, such as sugar or syrup, are added to give the liqueur its characteristic sweetness and balance.

One of the most famous liqueurs is Grand Marnier, a blend of cognac and orange liqueur. Other popular examples include Amaretto, made from almonds; Frangelico, which features hazelnuts; and Chartreuse, a complex herbal liqueur. There are also cream liqueurs like Baileys Irish Cream, made with Irish whiskey and dairy cream. Liqueurs come in a wide variety of flavors, ranging from fruit-based liqueurs like raspberry or peach, to herbal liqueurs such as absinthe or herbal bitters. 

Some liqueurs, like crème de cassis, are used to enhance the flavors of other spirits or cocktails, while others, such as limoncello, are enjoyed as standalone digestifs. Liqueurs are often enjoyed neat or on the rocks, sipped slowly to savor their complex flavors. They are also frequently used as ingredients in cocktails, adding depth, sweetness, and unique flavor profiles. Popular cocktails featuring liqueurs include the Margarita with Cointreau, the Espresso Martini with coffee liqueur, and the White Russian with Kahlúa.