Yet those who know about house brands know that stores like Costco aren't out there catching their own tuna or making their ...

While canned tuna often contains higher sodium levels than fresh fish, both offer several nutrients. First, look for fish ...

Narrator: Costco is one of the most popular big-box stores in the United States. It's known for selling everything in bulk from toilet paper to seafood. Jerry Seinfeld: Look at this can of tuna.

Former class action lawsuits filed against Costco contribute to the darker parts of its history. That doesn't necessarily make it a bad place to pick up a can of your favorite tuna. The proposed ...