EBM? izit breast milk?
If it is... does the baby know to differentiate is frozen or not... if you warmth it?

Yah, I sort of can related the short form.
But her baby so smart, could differentiate frozen milk? I thought baby mostly fussy over bottle or "direct".

Many years back (more than 8yrs ago), my mum was a confinement lady. Her boss (the lady on confinement) produce too much EBM and have to see doctor, thinking get help to reduce it.
Her doc in fact happy to know she have good supplies asked her whether she wanna sell it. Because there are babies who cannot feed on milk formula and need EBM. The doctor told her the price could be about RM10 per bottle (not sure the oz).
But this lady is a rich working mum, of coz she won't sell and she wanna stop production because going bk to work.