If you travel by train between Sapporo and Hakodate, there would be an announce to tell the arrival of Onuma dango when the train pass the station of Onuma. Onuma dango is a representative specialty of Onuma Park.
In the train, you may be able to get shouyu(soy sauce, but sweetened) and anko(sweet red bean paste) taste. The divided container represents two lakes of the Onuma quasi-national park, Onuma and Konuma. Pieces of rice dumpling refer to islets floating in the lakes.
One package costs 315yen(maybe) and it's really tasty. Why not trying Onuma dango?
If you go to the Onuma quasi-national Park, you can find the shop at the entrance of the main parking lot. The shop name is Numanoya（沼の家）. There you can get another combination, shouyu and seesame.
When I go to Onuma, I often buy some packages for me and for my family.
It spoils rapidly, so you have to eat it on the very day you get.
Akiko lives in a city next to Hakodate and loves to drive around Hakodate and surrounding area. I hope people who visit or live in the Southwest area of Hokkaido come to love the area, too. 函館の隣町在住で道南エリアのドライブ大好きAkikoです。道南を訪れたり、住んでいる人が土地を好きになってくれたらなぁ、と思います。