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by NalNezumi 489 days ago
Not OP, but I remember as a kid being told to eat crispbread (freely available in schools, I assume in most of Scandinavia) because it was good for your teeth/jaw.

I guess one could also include chewy / starchy food; my Asian side family had similar saying but more towards chewing thing properly. (chew 100 times per food in mouth)

So things like crispbread, (raw) carrots, dried fruits/vegetables/meat/squid, etc