Guessing which companies make Kirkland Signature products has become a sport for Costco fans. This time, we're wondering who ...

So who is behind Costco's Kirkland Signature tuna? Costco's tuna is actually manufactured by one of the biggest name brands in the canned fish industry: Bumble Bee Tuna. And while Costco sells its ...

Fans of Costco’s fresh sushi, ahi tuna and sashimi platters alike are ... Another chimed in an attempt to keep the hope alive, stating that the fish used in the new sashimi trays are “3 ...