Mayo is the perfect ingredient for all types ... with your tuna salad sandwich -- by turning it into a tuna melt or tuna toastie -- make sure to keep it refrigerated for as long as possible ...

A classic tuna mayo typically consists of drained canned tuna, mayonnaise, and a seasoning of salt and black pepper. Some might prefer to add onion and celery to the mix, but a simple substitution ...

This classic tuna melt can be made in a frying pan! If you like a little more texture to your toastie, it also works well with a tablespoon of finely diced celery folded through the filling.

Mayonnaise is great -- on that we can all agree (except for the mayo haters out there). This condiment can be fantastic in a classic tuna salad -- it's the default choice for a reason -- but ...

A stacked tuna melt has melty cheese running down its sides and creamy tuna salad dripping out onto a wooden cutting board - The Image Party/Shutterstock ...

In a classic tuna mayo, there are bits of drained canned tuna, mayonnaise, and a seasoning of salt and black pepper. Some people might like to add a little onion and celery to the tuna mayo ...