Usually i pumped the breast milk the afternoon/ night before, and preserve for the next day consumption. So it should not exceed 24 hours, maybe only 12 hours.
It seems weird to taste, but I think I have to do so to find out the reason.
I don't want to be forced to feed him formula when I am out as this is my practice right now, my mother-in-law doesn't like to feed breast milk. :evil: