They’re made of starch. It’s like people eating those corn starch packing peanuts over here. The toothpicks are edible, though probably not made in a facility with food grade standards.
Ohhh, so it’s basically unofficial wagon wheels, not hard wood. That explains the picture
Is it wood starch or some sort of foam?
Sweet potato or corn starch.
So it’s perfectly edible, other than they aren’t produced as food and aren’t made to that standard
From the article:
Most toothpicks in South Korea are made of sweet potato or corn starch instead of wood. Their green color comes from the food coloring that is applied in the manufacturing process.
It feels like eating a toothpick and getting a bit stuck in your teeth leads to one of those infinite loop scenarios.