Costco testing Shake Shack copycat cheeseburger in Southern California – Daily Breeze

Forget pizza and hot dogs. Costco, often secretive about its merchandising strategy, is selling a Shake Shack-style cheeseburger made with an organic beef patty at a few of its fast-food courts in Southern California. The burger is being sold at warehouses in Corona, Pacoima, Lakewood, according to Santa Ana-based Foodbeast, the popular food marketing site. […]

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Costco testing Shake Shack copycat cheeseburger