Cleaning out the gunk

At work today, as we were not that busy, I was asked to start cleaning the extractor fans that we use for the Yakiniku (Japanese Charcoal BBQ) upstairs. And WOW, they were dirty. It was a build up of all the grease and smoke, but nothing that a sink full of detergent and scolding hot water couldn't fix. Although the feeling of having oily hands remained with me for the rest of the night despite watching them a few times. :/