This is popcorn from Japan Frito-Lay. This Japanese popcorn has the taste of butter shoyu (butter shoyu means butter-flavored soy sauce).
It is seasoned with butter from Hokkaido (a place famous for its dairy products), so it has a rich flavor but only a mild aftertaste.
One bag of this snack is the equivalent fiber amount of two lettuces, so it is an ideal snack for supplementing your dietary fiber shortage.