That there is a fat separator. Strangely it is not easy to find one of these here in our fine city. I had to go to Amazon for this little fella. They did have a 4 cup version, but I figured 2 cups would suffice. We make broth from every chicken, and occasionally make beef broth as well, which this will work very well for. Last night it helped me make gravy with ease. It is pretty much a unitasker, eventhough it does have a built in measuring cup. The spout is not the easiest to clean and it is plastic. Still it works wonders.