3 c. powdered milk
1 pkg. unflavored gelatin (or 1 1/2 pkgs. to make it thicker)
1 tbsp. sugar (or more if you like it sweeter)
1 lg. can evaporated milk
3 tbsp. yogurt
1 1/2 tsp. vanilla (optional)

Soften gelatin with a little cold water, then add boiling water to make 1 cup total. Add sugar and cool a bit. In a large bowl, mix 3 cups of powdered milk and 3 cups water. Mix well. Add evaporated milk, 2 more cups tepid water, gelatin mixture, vanilla and yogurt. Stir well. Put into a covered bowl or covered glass jars then put into oven that was preheated to 275 degrees and turned off. Leave it in overnight or for 8 to 10 hours. Do not disturb while in the oven.