Read the original post here.
Rendering animal fats is a powerful technique to know. Olive oil and butter are still my most common fats for cooking, but having some rendered bacon or chicken schmaltz are so useful to alter or boost the flavor of a dish.
Like Christine said in the post, this is wet rendering. The fat is in a pot and basically starts off by melting into the water. When the water boils, the whole mixture is essentially held at 212F/100C until the water boils off – hot enough to melt the fat but not so hot that it cooks and develops off flavors.
(Dry rendering, by contrast, involves simply cooking chunks of whatever in a skillet. I do this most often with bacon, over a medium-low heat – the fat in the bacon needs to render out before the bacon starts to burn. Wet rendering takes longer but is more forgiving about this, dry rendering requires a little more focus.)
After the water boils off, the remaining liquid in the pot goes from cloudy to clear, and then you’re off to the races. Take care not to burn the fat or the cracklin’ in the pot – you want the skin to fry crisp and golden brown, but you don’t want to get to, or past, the smoke point of the fat in the pot.
If you do this with pork, you get rendered lard and cracklings.
If you do this with chicken, as shown, you get schmaltz and gribenes.
If you do this with duck, you get duck fat (swoon!) and … well, duck cracklings, I think.
And so on.
As I mentioned above, this is a tool on your way to a finished dish. To get a sense of how to use these, buy some potatoes, dice them, dry them with a paper towel, and saute them in these different fats. You’ll find that it all tastes like golden brown delicious potato, but they have background flavors from the cooking fat.