http://www.j-oil.com/products/sarasara/
We saw this commercial on TV while staying Hokkaido.
It's sponsored by the cooking oil company. they made the world biggest korokke in the town of Assabu (厚沢部町), where is famous of meekuin (土豆).
Japanese is really smart when it comes to promotion. They don't stick to your ears and keep telling you "buy our food oil," “our meekuin is delicious”, or "use our onions."
They go indirect - they make "every 21th of the month is the curry day" in Furano, to encourage the consumption of onions, they make the world's biggest koroke to entice you make one with their food oil.
Very smart. ;)
