When it comes to choosing cheese to pair with tuna, there are several options that work well. Here are some popular choices: Cheddar cheese: This is a classic choice that goes well with the flavors of tuna. It's a good option for those who prefer a sharper taste. Swiss cheese: This cheese has a nutty and slightly sweet flavor that pairs well with tuna. Provolone cheese: This cheese has a mild and creamy taste that complements the flavor of tuna without overpowering it. Mozzarella cheese: This cheese is a good choice for those who prefer a milder flavor. It has a smooth and mild taste that pairs well with tuna. Pepper jack cheese: This cheese adds a spicy kick to the tuna melt and goes well with the flavor of tuna. Ultimately, the choice of cheese comes down to personal preference. You can experiment with different types of cheese to find the one that you like best.