Once you get home with the liter of Costco's Kirkland brand syrup and pop the lid, the primary issue comes to light.

Interestingly, the panel identified only two of the coffees spot-on. Two of five tasters nailed the watermelon and called out ...

Discover the worst things to buy at Costco! From overpriced name-brand items to perishable goods that go to waste, make sure ...