Ask your butcher for some suet...he'll probably give it to you for free!
I stuff it in my crockpot with a roast, and when it's rendered down and lovely and salt n' peppery, I pour it into a cup and stick it in the fridge. Whenever I want some fat I just stick the cup in the microwave to liquify it...then sip it like bullion.

If it's good enough for the bird feeder, it's good enough for me!!

I like sour cream on everything. Same with creme fraiche.