9 x 13 inch pan - 7 layers. Grease pan lightly. Mix in 4 separate small bowls and keep ready at room temperature 4 small packages Jello:

1 orange
1 lime
1 lemon
1 red, any flavor

Use 1 cup boiling water, 1/2 cup cold water for each flavor, dissolve and mix well.

For between layers of Jello prepare:

2 c. milk
1 c. sugar
1/2 c. cold water
2 c. sour cream
2 pkgs. Knox gelatin
1 tsp. vanilla

Boil milk slightly, take off heat and add sugar. Dissolve Knox gelatin in cold water, add to milk and sugar, mix well. Add sour cream and vanilla, beat until smooth. This will make 3 (1 1/2 cups) of white cream mixture to be used between layers of Jello, so use 1 1/2 cups between each layer. Start with lime Jello; pour into pan, refrigerate to harden, then spread 1 1/2 cups white cream mixture to completely cover (slowly), let harden - orange Jello - let set - red Jello - let set.

Top with Cool Whip if you like. At Christmas I use 2 packages lime and 2 packages red Jello and alternate with white mixture.