1 pt. sour cream
6 (3 oz. each) pkg. Jello
(2 each of red, green and yellow)

Mix 1 package Jello with 1 cup boiling water. Divide into 2; add 1/3 cup sour cream to 1 part and add 12/4 cup cold water to the other half. Starting with the sour cream mixture, pour into 9 x 13 pan. Refrigerate until set, 30-45 minutes. Add the Jello layer and continue until you have 12 layers. Refrigerate until ready to eat.