There are various ways to freeze your milk, some of these are more costly than others. Here is a ranking of different ways to freeze your milk from the costliest method to the least costly
1. Medela freezer bags
2. Lansinoh bags
3. Ice cub trays and then transfer to Ziploc bags
When you want to defrost your milk best is to take it out of the freezer and defrost in the fridge. It generally takes about 12 to 24 hours to defrost. The defrosted milk should be used within 24 hours. You can then warm it in a bottle warmer.