Skip: Las Fortunitas tortilla chips
If the Costco by you sells these chips that come in a bag the size of a garbage bag, skip them. This isn’t because of the price. The entire bag costs less than $6, but it’s huge. You’re not likely to finish the whole bag before it goes stale.
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Buy: Kerrygold butter
There are a few brands of butter that are sold at Costco, and the organic Kirkland brand is one of them. If you’re looking for high-quality butter, foodies have said they prefer Kerrygold. It’s made of whole milk from grass-fed cows.