Yay! Somewhere I read that Dawn can be used for a variety of grease-cutting jobs, so I picked up a small bottle and have been trying it out for various tasks. I figured that degreasing that kettle would in its wheelhouse.
P.S. One of the gnarliest problems that Dawn has helped me with so far is removing soap scum from sinks/tub—that buildup can happen so fast when using the natural soaps that we prefer such as castile.