Where can I find Spread sweet in Riken?

Spread sweet can also be found in these cities:

Aarau Balsthal Buchs Egerkingen Egolzwil Erlinsbach Gränichen Herzogenbuchsee Huttwil Langenthal Lostorf Murgenthal Oberkirch Oensingen Oftringen Olten Reiden Rothrist Schöftland Schönenwerd Suhr Sursee Unterentfelden Zell Zofingen

You can also find this in Riken:

Soup Snacks Fish TK Wellness Food Panettone Yogurt Pizza Flavors Honey Popsicle Meat