Breastmilk storage and handling
Breast milk is recommended by numerous health authorities across the world, including the World Health Organization, UNICEF, and the American Academy of Pediatrics, as the optimal exclusive source of nutrition for infants from birth up to six months. Expressing and storing breast milk allows parents to sustain breastfeeding for a longer period of time.
Source: Wikipedia — Breastmilk storage and handling (CC BY-SA 4.0)