I'm not sure if there's been a good enough study on general "food literacy" to really know but I'd love to see one. Anecdotal so this is fairly worthless info: When I was a teen working at a pizza shop the amount of new hires that rolled through over the years that couldn't recognize some/many of the toppings on sight was alarming to me. I don't know how widespread that scenario is. I figure, at least some kids grow up completely ignorant of what the raw ingredients look like for any food they eat.