1 (16 ounce) can frozen sour cream concentrate
1 (1/2 fluid ounce) jigger vodka
1 (1.5 fluid ounce) jigger sweetened lemon-lime flavored carbonated beverage
3 teaspoons vanilla extract
In a blender combine the sour cream concentrate, vodka, lemon-lime soda and vanilla. Blend until smooth. Pour into a mixing glass and allow to shake. Serve over ice in glasses.