I make this all the time- I was surprised to find someone else adds a bit of mustard...I use a fresh green onion that I chop up fine, use the whole big dill pickle- minced and well as a 1/4 cup red pepper chopped up fine... this is an awesome tuna sandwich!
Yummy tuna sandwich. Simple and tasty. I wasn't sure about adding the mustard but just a little bit adds a little kick. Thanks for sharing. Made for Bargain Basement Tag.