To render fat of any kind, grind it up or cut it in small pieces. Put it in a pot on the stove over a low to medium flame. You don't want it too hot or it will start smoking and become a fire hazard. Keep a tight fitting lid handy. The fat will slowly heat up releasing the liquid oils. When the fat that you ground looks like cooked ground beef flosting in oil, it is done. Turn it off. You can also achieve the same thing by baking it, but stove top is less messy and quicker.
At this point, I filter it two times. The first time I pour it through a sifter (not the mechanical kind) to get out the chunks. Then I pour the resulting liquid (with small floaties) through the same sifter only lined with a paper towel. This results in a nice clear yellow/amber liquid. I pour it up in wide mouth canning jars and freeze it. Your can also pressure seal it (canning). When it cools down it is a lovely white hung of ready to use lard or tallow. I will never again make vegetable only soap. I was missing out on the luxury before I switched.
At this point, I filter it two times. The first time I pour it through a sifter (not the mechanical kind) to get out the chunks. Then I pour the resulting liquid (with small floaties) through the same sifter only lined with a paper towel. This results in a nice clear yellow/amber liquid. I pour it up in wide mouth canning jars and freeze it. Your can also pressure seal it (canning). When it cools down it is a lovely white hung of ready to use lard or tallow. I will never again make vegetable only soap. I was missing out on the luxury before I switched.