Red Onion is famous to old timers who grew up in the bay area in the 60s. For what they offer now it seems they haven't kept up. While I was not happy with the 5 Guys in Pinole, I'd rate it better than the Original Red Onion and it seems to me Red Onion has not carefully checked out the quality of their neighboring competition - Nations, In and Out Burger, and 5 Guys. Sorry, but there's too many great places for hamburgers in the bay area that leave this restaurant in the dust.
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