What the heck did I eat?

Maybe Arare Rice Puffs?

Eden brand's Five Flavor variety package says: "Arare (a-ra-ray), 'hail' in Japanese, is one of the most popular traditional snacks in Japan. Eden® Arare Rice Puffs are made much like those invented over 800 years ago. Whole sweet brown rice is steamed, pounded into mochi, a glutinous dough, then shaped, seasoned, and baked to crisp perfection. Enjoy five colorful and unique kinds: dried Safflower petals (Pink), toasted Nori flakes (Green), black sesame seeds (Black), our own special Tamari and barley malt blend (Brown), and simply delicious Plain."

They are also traditionally served with sushi during the Japanese Hina matsuri (Dolls festival), also called Momo no sekku (Peach festival).

Hope that helps! :)

Were they crispy and fried? If they were they were probably prawn crackers aka shrimp chips. You can get them in supermarkets anywhere.

They are called 'shrimp chips'. They are tiny hard little bits and when they are deep fried they poof into those light airy concoctions

you can buy them everywhere they called rice cracker,..

they also serve as an entry any jap .or Chinese restaurant,.

An ancient Japanese mind bending trick.