While exchanging the typical butter or mayo for oil is a tiny, mighty way to improve your tuna melt, it's still what's inside ...

For example, Panera Bread's Tuna Salad Sandwich contains 1,670 milligrams of sodium, which is over half an adult's daily recommended allowance. And it's not just salt; restaurants also serve tuna ...

Read more: 10 Things You Probably Didn't Know About Oysters There are dozens of ways to prepare tuna salad, so once you've picked up your water-packed fish and squeezed it dry, you need to decide how ...

Beloved sandwich chain Potbelly slaps together endless toasted classics, but which sub is best? We sampled 10 favorites to find #1.