Make a breast milk brick -Fast and easy tutorial

Breast milk brick storage 

A breast milk brick is a convenient, space-saving way to organize your breast milk freezer stash.

Not sure what breast milk bricks are? This quick tutorial is all you need -with the best tips along the way! 

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What is a breast milk brick?

A breast milk brick is a great way to store breast milk that has been frozen in breastmilk storage bags. With the breastmilk brick storage method, you can make stackable bags that are easy to organize and quickly see expiration dates.

This avoids losing any milk bags in the bottom or back of the freezer. This also helps ensure you are using your oldest milk first!

Equipment needed

• Breast milk storage bags
• Gallon Ziplock bag
• Permanent marker

How to make a breast milk brick

Step 1

The most important part of making a milk brick starts prior to freezing your breast milk. I recommend filling breast milk bags with no more than 2-4 ounces.

This way if a bag gets a hole, and you don’t realize it until it’s already completely thawed, you will waste a smaller amount of breast milk. 

I’m speaking from experience. Losing 7 ounces of milk in a warm bowl of water was the worst! 

Your breast milk bags will also stack together better in the gallon bags.

Step 2

After you fill your storage bag with breast milk, label with the date and time and anything else that’s important to you (like if you had coffee or took medication). 

Take a look at my article -How to use breast milk storage bags for more details about using storage bags specifically.

Important!- Lay your bags flat to freeze.

Have a level place for your bags to freeze in the freezer. This will make your breast milk freezer brick easier to make. I cut the flap off of a diaper box and use this to help make my breast milk bags level in our unorganized freezer.

You can just lay the cardboard on top of the things already in your freezer.

Step 3

Once you’ve collect 7-10 frozen breast milk storage bags, you can then line them up vertically in a gallon sized freezer Ziplock bag. 

Label the gallon bag with the date range of the milk inside. 

Step 4

Once you have your brick of breast milk, make sure you rotate your oldest milk brick from the back to the front (if you have that much breast milk). The bricks fit nicely in the door of a deep freezer too!

That’s it! You have your brick! Easy right?!

Tip!– I keep a level place in my freezer or use a small piece of cardboard in my regular freezer (you could also use a small cookie sheet) to first freeze my breast milk.

Then once I have enough milk in my regular freezer to make a milk brick, I put it together, label it, and finally store it in my deep freezer for long-term storage. 

How much breast milk is in a brick?

Depending on how full you fill your bags, you’ll be able to fit between 7-10 breast milk storage bags filled with about 2-4 ounces each. This would be about 20-40 ounces per brick. 

Resources

Wondering how long your breast milk is good in the freezer? Here is my go to resource for breastmilk storage guidelines.

My very detailed article about How to use breast milk storage bags.

Did you find this breastmilk brick article helpful? Let me know in the comments!