Little Lisa Slurry
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Little Lisa Slurry is a slurry made at the Little Lisa Recycling Plant.
The slurry is made out of all the sea life from the ocean using a conveyor belt of plastic bottle holders, including fishes, octopuses and whales. Then the animals are milled and killed until turning them all into the slurry. According to Mr. Burns, the slurry serves as pig food, oil and as many other products. However, when Lisa discovered this, she was horrified and realized Mr. Burns isn't a good person.
It is unknown if the slurry is still made, since Mr. Burns sold the recycling plant.