In small bowl mix 1 package of jello with 3/4 cup of boiling water stir until dissolved. When dissolved add 3/4 cup cold water, Remove from this 1 cup of liquid jello and pour into see though truffle dish or bowl. Place this in refrigerator until firm, when this layer is chilling add 1/2 cup of the evaporated milk to remaining jello set aside.(do not chill)
When jello in truffle is firm, remove from refridgetor and very slowly pour milky jello over harded jello. return to refrigerator. When this layer hardens start the process again.
REMEMBER THE HIGHER THE LAYERS THE LONGER IT WILL TAKE EACH LAYER TO HARDEN. When finished before seving you can add a spoonful of cool whip