A new bakery classic is taking over Costco’s around the nation, but they aren’t for everyone. The warehouse giant, famous for its $1.50 hot dog and soda combo, free samples and tons of bulk essentials, may have just dropped the item of the summer. But you’ll need to head to the bakery section. Costco shoppers’ latest obsession, pretzel bagels. The Kirkland Signature Pretzel Bagels are a “Bavarian Style” creation with a soft center and chewy pretzel crust. The popular wholesale club recently