Gardening & Landscaping Asked by Travis Well on July 26, 2020
I don’t often deep fry, or have bacon in the mornings, but when I do, I always have the same question of what to do with the grease. Usually, I just put it in the city compost bin, figuring all the raked leaves, etc from others will dilute it enough for the city to handle it. But can I compost it? Or is there a yeast, a fungus, beetle, worm, or something that I could feed it to that would turn it into something useful? And how could doing so be relatively straightforward for someone like me with kids and a job and not a lot of time and money to experiment with?
I found a neat q&a about grease and oyster mushrooms which seems relevant, but I’m guessing I’d have to adopt mushroom farming as a hobby to be able to use that advice.
Since you have a city compost bin the best thing for you to do is keep putting it in there. Grease is not particularly helpful to the compost process. By shipping it off you are not starving your pile of a great input.
I visited a commercial composting operation. They got a lot of different inputs including large quantities of wood chips and oil. They would soak some of their wood chips in oil as a way to incorporate the oil into the windrows. They had acres and acres of windrows that were turned and hydrated with large tractors. They also have big fences and lots to keep animals out and traps inside the space to catch any animals that get in. In that environment, where the piles are managed with large equipment in a tightly controlled manner, oil can be thoroughly composted.
In a home environment, trying to compost oils and fats is just begging for trouble.
Correct answer by greggles on July 26, 2020
In their book 'Gardener's Lore' (Also published as 'Old Wives'Lore') the authors, Maureen and Bridget Boland, tell a charming wartime tale. They buried the solidified fat they'd collected from their drain, at the dead of night, under an ailing climbing rose (since it was wartime London they were concerned that people would think they were wasting food if they just binned it). To their surprise, the rose that had never bloomed, flourished from then on. They used fat this way ever afterwards until they had a garden accessible to foxes, who would dig it up. In those days the fat they referred to was 'dripping' whether the same benefit is obtained from modern vegetable oils I wouldn't know - but the bacon fat may work if you've got a suitable rose that might benefit.
Answered by Jenny S on July 26, 2020
These are some alternatives I can think of:
If you have a burn pile outdoors once in a while you can burn it. Start small, be careful, not during a drought, check the weather forecast for strong winds and have a burn permit. Grease fires are not easy to put out (they have to be smothered).
For liquid vegetable fats used for deep frying, if you don't mind the smell the oil can be used in an old oil lamp. Might mean you get hungry from smelling french fries. :)
For animal and vegetable fats, in some amounts, they can be added to animal feeds (ask your neighbors if they keep pigs, etc. who would be glad to take it).
If it is a once a year thing you need to do, I would dig a trench down deep enough that the oils would not be dug up by animals, and bury it. Eventually the soil creatures will do something with it. As bodies of animals contain fats, nature does know how to deal with it. Every year choose a different spot.
The best thing we have done here to eliminate having to deal with bacon grease is that we buy precooked crumbled bacon. After calculating the cost of bacon and how much you actually get from it after being cooked it works out to be a reasonable cost.
Some people cook with bacon grease; in small amounts, it is OK, and it is how I always remember Grandma's bread. She said during the Great Depression they used bacon grease instead of butter on bread.
Answered by flowerbug on July 26, 2020
You can compost, or add to a compost pile, very small amounts of vegetable oil, but not animal oil. If you want to dispose of the oil, its best to mop it up with paper towels and drop those in the household rubbish rather than adding to the compost. Further information and advice on disposing of oil and grease here https://www.gardeningknowhow.com/composting/ingredients/vegetable-oil-in-compost.htm
Answered by Bamboo on July 26, 2020
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