What should I do with about 30 pints of frozen breast milk?

Well, do you have cats?

Oooo! I do not but I know a neighbor who does.

Ice Cream?

Found this site. Seems like it can have some future use for your grandbaby. I like the soap idea best.

@Pandora Wow! I thought I was the only person in the world to ask this question. That site is great!
I will offer some to my neighbor with the outdoor cat. The temperature will be well below freezing for the next few days. Maybe he can try a bag or two when it warms up a bit.

Do you have a local Planned Parenthood? Seriously, there could be women with problems feeding their babies who could maybe use it. it could be worth an ask.

Or even a hospital with a neo-natal department? I don’t know if they would take it but maybe.

(By the way, there is a typo in your OP.)

Milk banks! Here you go:

https://www.hmbana.org/find-a-milk-bank/overview.html

I would discard it. After a year in a normal freezer (~0F or -18C) it is mostly gunky water anyway. All the other constituents are pretty well degraded.

What a dilemma – Especially for a guy…

But I’m being “unhelpful” and the mods will punish my sins. Quick! Check out this extremely practical and useful information:

https://www.womenshealth.gov/breastfeeding/pumping-and-storing-breastmilk

Also remember it makes a great skin moisturizer, and everyone want more dessert when you use it in cheesecake (but just serve to close friends & immediate family).

There. You’re welcome.

Find a local chapter of La Leche League.

I finally looked in more detail and they are not pints. They are flat packs of about 120 – 150 ml each, 4 to 5 ounces. (I erroneously assumed they were pints since they looked like blood donation bags and are frozen flat.)
The bags are meticulously labeled and dated from June 2019 and July 2019. (18 months old) .