I'm a new member of lactnet, so this is my first post. To introduce myself, I'm Sally, and I,m a CLE, and completing my coursework to become an LC. I'm in LA spending as much time as I can on my clinical hours, so I can finally finish!! We've had a few cases of moms complaining that their milk went "sour" within a day of refrigeration and within a few days of freezing. Any ideas? The milk was cooled before being frozen, and kept in the coldest part of the freezer.Thanks!!!!!