The list of recalled items includes a Costco-exclusive snack.. A POPULAR snack sold at Costco has been recalled after officials found it may contain small pieces of wood. San Juan Salsa Co., which makes popular salsa sold at grocery stores including Costco, is warning shoppers not to eat certain items. ... A popular Costco product has been recalled after officials found it may contain small pieces of wood ... The salsas were made in Washington and use cilantro that’s now under a separate recall for possible foreign material. The ingredient, supplied by SupHerb Farms in California, was used in production...