One basic recipe for a non-alcoholic margarita combines one ounce each of lemon juice, lime juice and orange juice with two ounces of simple syrup. Shake the mixture over ice and strain into a margarita glass.
Margaritas typically include tequila and triple sec as alcoholic ingredients, with citrus added for acidity. Triple sec is an orange-flavored liqueur and therefore, non-alcoholic, or virgin, margaritas often replace the orange flavor of triple sec with non-alcoholic orange juice. Triple sec also has a distinct sweetness, so simple syrup is needed to sweeten the mixture and prevent the lemon and lime flavors from becoming overly prominent. Simple syrup is a reduction of water and sugar in equal parts that can be purchased or made at home.
To replicate the flavor of tequila while still adding sweetness to the drink, replace simple syrup with agave nectar. Tequila is distilled from the agave plant and therefore assumes some of the plant's flavor. Agave nectar, therefore, helps recreate this earthy flavor without the addition of alcohol.
Serve margaritas in margarita glasses with a salt rim. Use lime juice to moisten the rim of the glass and gently rotate the glass to coat the rim. If making frozen margaritas, simply add 3/4 cup of ice cubes to the ingredients listed above and mix in a blender until a smooth consistency is achieved.