Costco recalled a variety of Kirkland Signature prosecco because bottles could spontaneously explode. The recall only impacts one specific type of Kirkland prosecco, detailed below. Costco just recalled a lot of its store brand Kirkland Signature Prosecco over explosion concerns. The letter indicated that customers who purchased Kirkland Signature Prosecco Valdobbiadene (item number: 1879870) between April 25 and August 26 are at risk of having a faulty bottle. You can get fully refunded for recalled bottles by presenting the recall letter at your nearest warehouse.