Tired of a plain ‘ole tuna sandwich with mayo? Well, I have a spicy tuna sandwich recipe to kick it up a notch. My Sriracha tuna sandwich recipe consists of a sauce made of mayo, Sriracha, and sesame oil. This sauce is just so delicious because of the spice from the Sriracha and bold toasty flavor of the sesame oil. Not to mention the addition of cheddar cheese, which makes any sandwich melt in your mouth.