Dry matter

Okay little one, let me break it down for you. Dry matter is basically what's left in food or any other substance after all the water has been removed.

Imagine you have a slice of watermelon. When you take a bite, you taste the juicy goodness of the fruit, right? But if we were to somehow take out all the water from that slice of watermelon, what would be left is dry matter.

This dry matter can be things like sugars, proteins, fibers, and other nutrients. It's important to know how much dry matter is in something because that's what's going to provide the actual nutrition. If we only looked at the wet weight (before the water was taken out), we might get an inaccurate idea of how nutritious something really is.

So, in summary, dry matter is what's left after taking all the water out of something, and it's important to know how much of it is in our food to get a good idea of how nutritious it is.