The only downside to rendering lard is it stinks. So make sure to open a few windows!
I rendered the lard using the stove top method.
How to Render Lard - Stovetop Method
1. In a large heavy bottomed pot pour in 1/2 cup water. The water will keep the fat from scorching.
2. Chop up the fat, if it hasn't been already.
3. Put the fat into the pot. If your fat is frozen (like mine was) put the heat on medium and stir occasionally until the fat unthaws.
Frozen pig fat.
3. Turn the heat to medium-low and stir occasionally.
4. As the fat starts to melt (about 1 hour) begin stirring more frequently.
The fat rendering.
5. Some say the lard has rendered when all the cracklings (tiny bits of fried pork) sink to the bottom. Waiting until this happens will give the lard deep nutty flavour. You can try taking out the lard before this point to have a less intense flavour.
6. Strain the lard through a cheesecloth line sieve or a coffee filter (cheese cloth works best). The crackling can be eaten as a snack or used like bacon bits.
7. Let the liquid lard cool slightly and then pour into quart jars. The liquid lard will be yellow but it will solidify white.
8. Because the lard is not partially hydrogenized (like the store varieties) it must be kept in the fridge or freezer. I've read that it will last in the fridge for up to three months and in the freezer for up to a year.