Schools. Specifically, kids being asked to bring in the exact ingredients for catering. A pinch of salt, 150g of Swede, 3 teaspoons of milk.
Yet they're the biggest advocates of not wasting things, climate change etc. Fucking deluded wankers.
Why not everyone chip in and the school buys the ingredients in bulk to suit the amount of students taking the class so you're not chucking half of things away? That's before you even take into account the food going stale/bad by being pre prepped hours before.