Ruby’s: A Southern California institution, or just a chain of diners? Hit an Orange County beach, then do a Monkey Flip and judge for yourself By Erika Ehmsen, Sunset copy chief On a recent family vacation in Orange County, I couldn’t help but cruise over to Ruby’s Crystal Cove Shake Shack, to cool off with something frosty on a typically warm late-summer afternoon. Before the first sip of my Monkey Flip, I snapped a shot of it on my iPhone (such a great toy) and speeded it off to Su