modersmjölk

moder (“mother”) +‎ -s- +‎ mjölk (“milk”)

modersmjölk c

1. breast milk, mother's milk

   Synonym: bröstmjölk

2. (idiomatic, in "få/insupa något med modersmjölken" (get/imbibe something with the mother's milk), "komma med modersmjölken" (come with the mother's milk), and the like) to acquire something (like knowledge, interests, experiences, or a mindset) at a young age (from one's parents or the environment or the like)

• modersmjölk in Svensk ordbok (SO)
• modersmjölk in Svenska Akademiens ordbok (SAOB)