1 can (12 ounces) evaporated milk, chilled, divided
In a small bowl, dissolve one package of gelatin in 3/4 cup boiling water. Stir in 3/4 cup cold water. Pour into a 13-in. x 9-in. baking dish coated with cooking spray; refrigerate until firm, about 1 hour.
Dissolve a second package of gelatin in 1/2 cup boiling water. Stir in 1/2 cup cold water and 1/2 cup milk. Spoon over the first layer. Chill until firm.
Repeat five times, alternating with creamy gelatin. Chill until each layer is firm before adding the next layer. Refrigerate overnight. Cut into squares.
This recipe takes time to prepare since each layer must be set before the next layer is added.