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I'm not sure if this is the exact brand of chocolate-covered pretzels that you can now find at Costco, but I do remember that the pretzels were coated in Special Dark chocolate. You can find big bags of these in the chip aisle.
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And from personal experience, I highly recommend the Kettle Tuscan Three Cheese Chips, unless you're prone to eating an entire bag in one sitting, in which case you should stay away. These chips have a lot of pizzaz...as the bag reads, it's a "Mediterranean vacation in a bag."
Also, while you're there, pick up a German chocolate cake, which is likely a "limited-time only" dessert.