Dessert recipe: half a bowl of milk, equal volume of powdered milk on top. Eat with a spoon. Tasty, healthy, quick and easy to make, cheap.
The reason not to eat the powdered milk from the pack directly is that a slight breath will make the powder fly. If some of it hits the back of the throat, it causes coughing, which launches the rest of the powder all over the room. Adding liquid milk removes the choking hazard.