The manufacturers behind Costco's Kirkland Signature products are often mysterious, but the company that makes the brand's ...

Take for instance, Kirkland Signature Organic Peanut Butter which has been compared to two Trader Joe's peanut butters: Its Creamy Salted Peanut Butter and Organic Creamy Peanut Butter Salted ...

So, I bought creamy peanut butter from Whole Foods, Trader Joe's, Wegmans, and Costco and tried each with an apple slice and a cracker. Here's how I'd rank each spread, from worst to best.

Three blue and cream boxes of nut bars with a picture of the bar on front, surrounded by other boxes - ZikG/Shutterstock ...