Are those bowls genuine LEGO pieces? I've been sieving through my video collection and came across a video from 2011. It's part of a series of Ninjago videos giving you tips on fun things you could do with the Spinners. At the end of the video, there's this frame where Cole goes to a laid out dinner table to eat with the other Ninjas:


I find this scene rather adorable, but find it slightly puzzling; for starters, how are those tiles connected to each other? But that's not really my question; you don't really need to answer that. My real question is, are those 6 bowls real LEGO pieces? They look rather peculiar and Un-LEGO-y. I get how they made the cups and bottles; they just flipped some 1x1 round bricks and a chalice. But how about those bowls? If it is a real piece, could someone direct me to a set containing it, and if not, what they might be?
My guess is that they're LEGO Round Plate 1 x 1 Straight Side (Part ID: 4569058
Design ID: 6141) with paint applied to make them look like food. Details of some of the sets that contain them are available on BrickLink.