breast milk storage

Jasmin • 24, Mom of ✌🏽️👧🏽👶🏼💅🏽! ♍️ VIRGO!
I pumped milk for my 4 month old and mixed cereal in it for the first time today, she didn't drink it all. I'm wondering if I can store it, if so how long ? Please let me know 
Thanks 💖