That is a varient of the 'floater' (AKA 'pie floater'), created by sticking a meat pie in pea soup. I think the actual origin is English, but they abandoned it under the Geneva Convention forbidding Chemical Weapons Coloured in a Sickly Green Hue.
Here is a view of the real thing - the usual warnings about children and not operating heavy equipment apply (actually a bucket will help too)...
... and people wonder WHY I'm a vegetarian
