Question: how to properly warm up refrigerated breast milk?
Answer: To warm your milk, place the breast milk bottle or bag into a cup, jug or bowl of lukewarm water for a few minutes to bring it to body temperature (37 °C or 99 °F). Alternatively, use a bottle warmer. Do not allow the temperature to go above 40 °C (104 °F), and do not use a microwave, as this can overheat your milk.