Oh my god, I'm such a fool! Of course! I've just read how to do it. Apologies again. Please, someone delete this.

I apologise if this has been posted before, but I couldn't find it anywhere. Has anyone found an easy way - or has managed - to get the grog from the Chef's kitchen to Otis' cell lock without the mug melting? If my memory serves me correctly, you have to get the grog and click frantically to get to ...