The meat is nasty. So many recalls on top of how low quality and bad tasting it is. Just the worst.

Edit: just to be clear in March of this year Costco was yet again found to be using the “worst ranked” supplier.

You can downvote me as much as you want, and I like Costco, but mass meat producers are never going to be quality. This picture with the organic Kirkland beef packs? Those in particular are just awful.

Go to your butcher, find out what cows are raised and where they are sourced. If that sounds good have them grind you a nice fresh burger blend.