Pour your five jello flavors into a square storage container that holds at least 2 cups of liquid.
Bring five cups of water to a boil. To each jello flavor add 1 cup of boiled water and stir well to dissolve the jello.
To each jello flavor, mix in ½ cup of cold water. stir well to combine, cover and refrigerate for at least 6 hours or until firm.
When ready to assemble, lightly grease a bundt pan with oil. You can use a spray oil if you have that. Set the mold aside.
Using a small knife, cut each jello flavor into 12 equal squares. Carefully scoop the jello cubes out into a large baking dish. Set aside.
Pour 1 oz( 4 packets equal 1 oz) of the gelatin powder into a bowl. Mix in 1 cup of cold water. Stir quickly until dissolved. Let it sit for 10 minutes.
While the gelatin sets, pour all of the milk products into the blender along with the vanilla extract. Cover and blend for a few seconds. set aside.
Once the gelatin has set and congeled, microwave it on high for 30 to 40 seconds or until it becomes liquid form again. When ready, pour the gelatin into the blender with the milk mixture. Blend for 30 seconds.
To the bottom of your prepared bundt pan, pour in ¾ cup of milk/gelatin mixture. Add some some of the cubed jello flavors. Pour in more milk/gelatin. Continue layering until you fill the bundt pan. All the jello should fit. You may have just a little of the milk leftover. Chill in refrigerator overnight.
Next day, remove gelatin from refrigerator. Gently press the gelatin on the sides so it releases from the pan. Place a large plate over the open side, holding tight , flip it over onto the plate. Slice and enjoy!