[hosh]

Ah. So organisms such as oyster mushrooms can eat oil in contaminated soil and bring it back into something that plants can grow on.

It also depends on how you are composting. The main problem with composting oily food is that the oil goes rancid. There are solutions for that.

Black Soldier Flies Larvae can eat that stuff, and are symbiotic to human activity. (They stay in one place, drive out the other species of flies, and don't go after humans). If you have a red earthworm composting bin, you'd feed the BSFL stuff that you don't want to feed the worms. (You'd feed the worms the best stuff and give the rest to the BSFL).

Industrial composters will just throw them all in big piles and they will eventually compost. Some might implement ideas from Paul Stamets and cultivate fungi on the heaps to help it break down faster.