My first son liked his breast milk at room temperature, so our whole pattern was when he finished a bottle, we would take a new one out of the fridge or cooler and let it sit. By the time he was hungry again (well before the milk would go bad), it was warm enough to his liking.
The PP is right though--- some babies will take it ice cold! My friend's baby would drink breast milk right out of the fridge, even if it was cold enough to have ice crystals on top.
Working Mother to 2.5 Year Old Sagan (Sagan's Medication-Free Hospital Birth Story) and 10 month old Dyson (Dyson's Medication-Free Hospital Birth Story)
In my limited "free" time, I've been experimenting with 3D printing breastfeeding pendants and breastfeeding charms for Origami Owl Living Lockets.
I also collect Views While Nursing when I'm out and about and would love to see *your* Views While Nursing too! : )