Each package makes one layer. There are 8 layers in all, two of each color. There is a clear layer, meaning you can see through the jello and a milky layer that uses the milk.
Before you begin, here are a few pointers. The first layer takes the longest to set up—after that, the next layers firm up faster. You CAN mix up the next layer while the previous one is setting up, but be careful not to mix it too soon or it will set up before you are ready.
FOR EACH CLEAR LAYER: Boil 1 cup of water in a small pan. Pour water into a bowl and mix in one package of jello. Stir until jello is dissolved.
Add 1/2 cup of cold water. Stir and then pour into an 8×11 glass casserole dish. Place into the fridge until the jello is set.
FOR EACH MILKY LAYER: Boil 1 cup of water in a small pan. Pour water into a bowl and mix in one package of jello. Stir until jello is dissolved.
Add 1/2 cup of evaporated milk. Stir and then CAREFULLY pour into the 8×11 glass casserole dish on top of the previous layer. Place into the fridge until jello is set.
Alternate the layers so that the same colors are on top of each other. (Clear Green, Milky Green, Clear Red, Milky Red, Clear Orange, Milky Orange, Clear Yellow, Milky Yellow).