Lard and bacon grease. Whatever remains, filter through sieve and store in glass jar (I re use an old pickles jar). Keeps in refrigerator forever...can reuse as many times you want...don't worry...it's not really forever...it will run out before forever happens.

In Canada, we have tenderflake...real lard without hydrogenated crap. Be careful in the USA with other brands.

I actually get leaf lard from farmer (grass fed) and render it myself. If you don't have access or time for that, use tenderflake.