4 (3 oz.) pkg. Jello (use colors corresponding to the season or occasion)
1 pt. sour cream
2 env. Knox unflavored gelatin
2 c. milk
1 c. sugar
2 tsp. vanilla
9x13x2 inch greased glass dish

FIRST LAYER: Mix 1 package Jello in 1 cup boiling water and add 1/2 cup cold water. Slowly pour into dish. Let set 30-45 minutes in refrigerator. Start white layer immediately, because it takes about 30 minutes to prepare.

WHITE LAYER: Bring 2 cups milk to boil over low heat. Add sugar and stir until completely dissolved. Dissolve Knox gelatin in 1/2 cup cold water; add to sugar and milk. Stir. Add sour cream and vanilla, and blend with electric mixer. Let cool, but keep from thickening by setting on warm part of stove.

Spoon 1/3 (1 1/2 cup) of white layer slowly onto Jello layer. Let set in refrigerator again for 30-45 minutes. Repeat Jello layer and then use half of white layer. Repeat Jello layer, use remaining white layer, and top with Jello.