A classic Amaretto sour is made by mixing 1 1/2 ounces Amaretto liqueur and one to two splashes of sweet and sour mix in a cocktail shaker half-filled with ice. It is then poured into a glass to serve and garnished with a maraschino cherry and orange slice.
For an Amaretto sour recipe not using sweet and sour mix, one makes simple syrup by dissolving sugar into an equal amount of water. One then mixes 1 ounce of the simple syrup with 1 1/2 ounces of Amaretto liqueur and 3/4 ounce lemon juice in a cocktail shaker. To make a punch-style Amaretto sour, one tops off the mixed Amaretto liqueur and sweet and sour mix with 7Up.
The Amaretto sour is part of a style of drinks known as "sours" because it is made with one liqueur, lemon or lime juice and a sweetener. Other sours include margaritas, sidecars and whiskey sours. Because the Amaretto sour has a strong taste, it is best served with salty snacks, such as peanuts or pretzels, or slightly sweet desserts, like tiramisu or cheesecake. An Amaretto sour can also be shaken without ice and poured into a glass that is filled with ice. One can also rub the rim of the glass in lemon juice and dip in sugar for an additional garnish.