ELI5: Explain Like I'm 5

Filled milk

Filled milk is a special kind of milk that is made by taking out some of the good stuff that is naturally in regular milk and replacing it with other things that are not as good for you. This is because regular milk has a certain type of fat in it that some people are allergic to and so they cannot drink it.

Filled milk usually has a lot of different things added to it to make it taste good and also to try and make up for the things that were taken out. Some examples of these things include sugar, salt, and other chemicals.

While filled milk can taste really good and is a good option for people who are allergic to regular milk, it is not as healthy for you since it has all of those added things in it. That's why it's important to try and drink regular milk if you can, or other alternative milks that are not as processed.