To encourage children to drink milk, Japanese dairy manufacturer Seki Milk prints manga-style comics on glass bottles, Mail.ru writes with reference to OddityCentral.
Drawings made with white paint will only be visible if you empty the bottle of milk. The ploy to get children to drink more milk is due to calcium deficiency in Japanese children, who often do not finish their daily serving of milk at lunch. In addition, such a measure will reduce the occurrence of food waste.
Some, however, fear that children may simply pour out the milk to read the comic, but there is still hope that the curiosity and integrity of Japanese children will be stronger than their dislike of milk.
