1/4teaspoonfreshly ground black peppermore or less to taste
Bring a large pot of salted water to a boil. Add in the pasta and cook according to package directions. Once cooked, drain and rinse with cold water. Drain the pasta well a second time before adding to a large mixing bowl.
To the bowl with the pasta, add in flaked tuna, finely chopped hard boiled egg, red onion, celery and relish. Mix to combine.
Add in enough mayo to coat and season with kosher salt and black pepper to taste.