Another thing you can do is to separate the grease from any residual solids.
If you have a jar of bacon grease with brown bits floating around in it, you can put it in a pot with a similar amount of water and bring it all up to a boil or just near it for just a moment. The grease will sit on top of the hot water, but anything else will fall down. Then let the pot cool and put it in the fridge to solidify the grease. You can then scoop the now-solid grease in big chunks and put it back in the jar and discard any bits in the water.
I learned this from people who do at-home soap-making from their rendered fats. They would repeat it a few times before adding lye, as it will leach impurities such as salt, aromatic and favor compounds from the fat, but I find doing it once or twice leaves me with a nice cooking fat that still has bacon-y aroma.
Another thing you can do is to separate the grease from any residual solids.
If you have a jar of bacon grease with brown bits floating around in it, you can put it in a pot with a similar amount of water and bring it all up to a boil or just near it for just a moment. The grease will sit on top of the hot water, but anything else will fall down. Then let the pot cool and put it in the fridge to solidify the grease. You can then scoop the now-solid grease in big chunks and put it back in the jar and discard any bits in the water.
I learned this from people who do at-home soap-making from their rendered fats. They would repeat it a few times before adding lye, as it will leach impurities such as salt, aromatic and favor compounds from the fat, but I find doing it once or twice leaves me with a nice cooking fat that still has bacon-y aroma.