Some mothers' milk has a high content of lipase (the enzyme that breaks down the lipids in the milk)causing it to sour quicker than others. To increase the storage life of the milk, she could scald it by heating it in a metal or glass pan (not coated)until the milk just begins to bubble around the edges, NOT boiling. Then cool it to room temperature and store as usual. Of course, this would defeat the purpose of rolling over and getting more sleep after pumping if she's up in the kitchen cooking the milk. Why is she pumping in the night and not offering the breast? Is the baby not taking it? If that's the case, then she's probably better off just storing the pumped milk in the fridge as she has been and scalding it only if it needs to be stored for longer than a day or so. Saving milk at room temperature may not be an option for this mom. Terri Lear, BA, IBCLC Breastfeeding Solutions, LLC Alexandria, VA 703-313-0040 *********************************************** To temporarily stop your subscription: set lactnet nomail To start it again: set lactnet mail (or digest) To unsubscribe: unsubscribe lactnet All commands go to [log in to unmask] The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(R) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html