Source: Chef Andy's recipe index
1 9-inch graham cracker crust, baked.
1 14-oz can sweetened condensed milk
1 8-oz carton sour cream
1/4 cup plus 2 tablespoons Tang powder.
(The exceedingly adventurous may substitute any other sort of instant drink
1 8-oz tub Cool Whip.
Mix the milk, sour cream, and Tang together. Fold in half of the Cool
Whip. Spoon into the pie shell. Top with the rest of the Cool Whip. Chill.