For the kids, simply serve the cocktail base over ice—hold the vodka, naturally.
Ingredients
8 cups water
3/4 cup sugar
1/2 cup plus 8 teaspoons tamarind concentrate,* divided
2 tablespoons plus 4 teaspoons fresh lime juice, divided
12 tablespoons vodka, divided
4 cups ice cubes, divided
Lime slices
Directions
Stir 8 cups water, sugar, 1/2 cup tamarind concentrate, and 2 tablespoons lime juice in large pitcher until sugar dissolves. DO AHEAD: Cocktail base can be made 1 day ahead. Cover and refrigerate.
Combine 1/2 cup cocktail base, 3 tablespoons vodka, 2 teaspoons tamarind concentrate, and 1 teaspoon lime juice in cocktail shaker. Add 1 cup ice cubes; shake 30 seconds to chill. Strain into 2 Martini glasses. Garnish with lime slices. Repeat 3 more times for 8 cocktails.
Often labeled "concentrate cooking tamarind, "tamarind concentrate can be found at Thai and Asian markets.