This home method mimics the same process that milk banks use to pasteurize milk from donors. You’ll need glass bottles for pasteurizing the breast milk such as the 8 ounce Evenflo Classic Glass bottle 6 Pack. These are available online and at baby stores for $15 or less. Six bottles may be a good starting point, but don’t hesitate to get a second set to make your Be sure to get enough bottles so you’re not having to constantly wash and reuse the same bottles. Four to eight bottles is a good starting point.
Once you have the bottles wash them. Using the dishwasher is fine. Next, thaw the donated breast milk if it’s frozen, then pour 5 ounces into each bottle and screw on the cap. If you bought 8 glass bottles, you can pasteurize 40 ounces of breast milk at a time.
Next get a pot large enough to easily hold the bottles to be pasteurized while leaving a one inch space between each bottle and its neighbor. Fill the pot 4 to 5 inches with water – the water should be at the same level as the milk in the bottles or a little higher. Remember the water level will rise each time you put a bottle in the pot.
After you have test fitted the bottles and the water level, take all the bottles out of the pot and heat the water to boiling. Remove the pot from the heat, wait 1 minute and then put the bottles in the pot spacing them at least an inch from the nearest neighbor.
Wait 30 minutes and remove the bottles from the pot. Leave the caps on until you are ready to use the milk. Once the milk cools it can be consumed immediately, stored in the refrigerator for 12 hours or frozen.
Please Note: Don’t actively boil the bottles – that is not how to pasteurize breast milk! Be sure to remove the pot from the burner and let it sit for one minute before putting in the milk bottles – otherwise you could cook the milk!