Costco just introduced a new and “ginormous” meatball marinara deli sandwich

Costco has recently introduced a new deli sandwich that has gained significant attention online. The sandwich features beef and pork meatballs, parmesan and provolone cheese, and marinara sauce on artisan hearth bread, as described by food influencer Laura Jayne Lamb. The sandwich has become a hit with customers, sparking buzz on social media platforms like Instagram.

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