Here's Why You Should Be Buying Your Olive Oil From Costco

There are many olive oils for sale that are not only of inferior quality, but also they can be diluted with less expensive palm oil, per the Olive Oil Times. And larger retailers that buy in bulk are more likely to get scammed, since it's harder to identify and weed out the bad oils. But that's not the case with Costco's oil.

In Costco Connection, Shauna Lopez, a corporate food buyer, said the company knew of the problems plaguing the olive oil market and had taken steps to ensure that its sourcing had integrity. "We have always been involved in this program by meeting the farmers and touring the mills and the processing plants in order to hold everyone in the olive oil production process accountable for the olives they bring in," Lopez said. "This ranges from the farmer who is registered with the mill, to the mill that grades and batches the olives as they come in daily."

The care has paid off with an endorsement from cooking star Samin Nosrat, of Netflix's Salt, Fat, Acid, Heat. Samin knows her olive oils, and the one brand she will name drop is — you guessed it — Kirkland Signature organic extra-virgin olive oil.  What can she say about it? "It's really good!" she told The Seattle Times.