However, the rice cakes also come in other flavors, including macadamia nut (white, below at left) and mango (orange, below at right).
A Japanese confection, rice cakes can be found at Asian groceries. In Denver, I've found them at the Pacific Mercantile and at H-Mart. Sometimes they are in a refrigerated section (Pacific Mercantile), sometimes in the freezer (H-Mart), and other times they are on the shelf, or even by the cash register. I'm not aware of any reason why the rice cakes need to be refrigerated or frozen; they don't last long in my home, anyway.
Thanks to Deb in Denver for the Japanese translation.
Pacific Mercantile Company
1925 Lawrence
Denver, CO 80202
H-Mart
2751 South Parker Road (Parker & Yale)
Aurora, CO 80014