I'd love to do such a quiz -I might even be willing to pay for the privilege! I'm quite convinced I'm really accurate at calorie estimation without using a scale but would love to be proven wrong. Zero food industry experience here, just from reading hundreds of food labels per year since very young, maybe 8 years old.

Thinking about it again, I'll probably do a lot worse from a picture because I can't have a bite of the food! Just having a spoon makes it so much easier in terms of ratios.