Atex got it in one. Bacon grease is among the very best all purpose taping and form tiool goop there is for most any anything. Plain lard is good but bacon and ham grease is much better for some reason.
That said it's unsanitary. It attracts rats and roaches and it can spoil if neglected. OTH using it makes you hungry for breakfast, BLT's, burger surpremes.
Other good stuff to have on the shelf with the taps is WD40 (GREAT for aluminum,) black nasty pipe threading oil (for soft gummy steels,) Tap Magic (almost universal application but a little pricy they way I slobber it on) Cut wax, cold creme, hand lotion, bees wax, almost anything that's geasy or oily and has a lits of ingredients.
We had a neglected Bullaqrd whose sump was never pum,ped. The coolant was like Grey Poupon mustard but smell like an old refrigerator. It was toxic waste. Besides soluable oil there was years of cutting oil and tramp oil, coffee, spilled soft drinks, snoose spit, sandwich srusts, butts, rat poop, dead bugs, you name it it had gone into the coolant to ferment and blend. That was the best taqpping goop I ever used. I even used it to form tool big radii on mild steel and so long as that nasty stuff wet the work before it went under the tool the ships crinkled up like foil. If you left a dry spot you have a definate drag and the next rev if dry would turn into a long ugly tear.