Let's say you've just made a stew, soup, or something with a layer of fat swimming on top and you want to get rid of it. You can use the ice cube trick, spoon the fat out, or refrigerate it to harden the fat and remove later. Those are good options, but now you have another: skim the top with sliced bread to sop up that grease.
I learned this bread trick while watching Gordon Ramsay do his chef stuff to make crispy, succulent-looking pork belly. At about the 2:52 mark in the video, he shows how he simply drags sliced bread across the surface of the sauce to soak up all of that fat. The bread is "like a perfect sponge" and also makes for awesome fry bread.
Slow-Roasted Pork Belly [Gordon Ramsay ]