Costco has introduced its Kirkland Signature extra-crispy fries, a solid frozen potato option that has been missing from the store's line-up. The reviews have been positive, with many Costco shoppers expressing their love for the fries. However, some argue that they have no business being as good as they are due to their affordable price tag and preparation method. The article also mentions a debate about oven versus air fryer for crispy fries, which has fueled a growing trend on social media.