There’s no doubt that Kerrygold butter is a top-notch butter product. If you aren’t familiar, the Irish butter is made with milk from grass-fed cows giving it a deeper golden hue than traditional American butter and an arguably creamier mouthfeel. But this premium product also comes with a premium up-charge.

I’ve personally found that everything I bake (especially cookies!) turns out so much better when I use Kerrygold rather than generic grocery store butter. So to save a buck, I’ve been stocking up on it at Costco where I can get four gold bars (the equivalent of eight sticks of American butter) for just $16.95—saving a few dollars compared to my local grocery store in the process.

But that all changed when I found an alternate on the shelf next to the Kerrygold at Costco: Kirkland Signature Grass-Fed Butter. It even comes in a shiny box similar to that of the Kerrygold packaging, signaling to me that this is Costco’s house brand version of the popular butter.

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