Senbei is a snack from Japan that is kind of like a cracker. It's made from rice that has been cooked, mashed up, and then flattened into thin circles or squares. Then, the rice is either baked or fried until it's crispy and crunchy.
People usually eat senbei as a snack, and it comes in many different flavors like soy sauce, seaweed, and sweet ones too! Some senbei also have toppings like sesame seeds or bits of shrimp on them.
Senbei is a really popular snack in Japan, and you can find it in many different stores or even make it at home if you want to try! But remember, it's a crunchy snack so make sure you chew it well before you swallow it!