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Originally Posted by PaleoDeano
I have 7 lbs of bison fat in my freezer, that I am going to render (one pound at a time). I am going to try the oven method. How many hours did it take you and did you set the temp down as low as possible? Did all the fat chunks turn to liquid? Did you cover the baking dishes or just leave them open? Did you strain the liquid fat through cheese cloth or what? Did you add water to the fat before putting in the oven? Sorry for all the questions, but I just want to do this correctly. I got this bison fat about 8 months ago. It has been in my freezer that long. Do you think it is still good? How long can it keep and not lose nutrients?
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Ok, lets see if I can answer all your questions.
It took about 2.5 hours at about 225-250 (started higher, when I had two pans in the oven, the one on the bottom rack was finished first, took it out and turned down the over and took another 1/2 hour to finish the second.) I left the pans open and didn't cover them. It seemed to not make a mess in the oven. I think it's the low heat that surrounds the pan rather than direct heat right under it. I seem to remember the whaling ships used to render the fat into the valuable whale oil using large kettles and low heat.
The fat chunks did not all turn to liquid, what's left is a wonderous material called cracklin' in the South. I strained the lard out using only a fine-mesh strainer (took most of the cracklin out with a slotted spoon first). I kept the cracklins and chop up a few to put in my eggs. Better than bacon when eaten like this! Cheese cloth would have ensured a lard with less of the tiny brown bits. Now, I have no problem whatsoever with tiny brown bits, so I didn't sweat it. I guess if you're cooking something white, you don't want tiny brown bits in your lard. That's not a consideration with me.
I did not add water. From what I can tell, water is added when this is done on the stove top because you have direct heat on the bottom of the pan. The water helps to keep you from burning the fat on the stove.
I imagine the bison fat is still good. I bet it will make some amazing tallow. (lard is from pigs, tallow from beef, I guess bison would fall under tallow, but I'm lazy about the terminology myself so who cares.)
The 7 pounds is going to be a lot of lard/tallow. Make sure you have some containers you can seal well and put in the freezer. If you use plastic, make sure the lard is cooled enough before pouring it into the container! I used glass bowls with plastic lids that I found at a home furnishings place. I've also used the smaller ramikins in the past. They also have the advantage of stacking well, you just have to make sure you cover them well. Freeze them and then give them out as gifts at the holidays!
Hope this helps!!
Plane Crazy