Check for an international/Mexican market. The groceries around here that cater to the Mexican-American population carry the Mexican real sugar coke.
Found this one in Beaverton: Tienda Y Carniceria Palacios - (503) 641-3462
6110 SW Lombard Ave, Beaverton, OR 97008
"The real sugar cola is difficult to find. Anyone know where to get it in the Portland, Oregon, area?"
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