The Best Low FODMAP Tuna Salad

Do you know what I like about this recipe? It’s easy - and it tastes good! This is one of my go-to lunch recipes for the days I don’t feel like cooking. It is refreshing and satisfying. Plus my cat, Grizz, really enjoys the tuna water I save for him for a treat.

Ingredients

1 (5 ounce) can tuna fish (in water), drained

One of the reasons I enjoy a good tuna salad sandwich is because I know that tuna fish is a lean protein that has some omega 3 fatty acids; those are the “healthy” fats.¹ It’s also a very inexpensive protein option.

¼ cup mayonnaise

This recipe also tastes good with plain Greek yogurt as a substitute for mayonnaise. If you are including lactose in your diet then pick whichever flavor you prefer.

1 ½ tsp sweet relish

Be sure to find a brand that is organic or does not contain high fructose corn syrup!

¾ teaspoon fresh lemon juice

I believe it’s the flavor of the freshly squeezed lemon juice that makes this recipe so good!

1 tablespoon celery, diced (optional)

Sometimes I add celery, sometimes I don’t. I like it either way. If you choose to add celery you add a bit more fiber and a nice crunch to the dish which is great for the gut!

Salt and Pepper to taste

How to make The Best Low FODMAP Tuna Salad

Begin by opening your can of tuna and draining off the tuna water. (Tip: Press the top of the opened can into the tuna and pour off the extra liquid).

In a bowl mix together the tuna fish, mayonnaise, sweet relish, lemon juice, celery (optional) and season with salt and pepper.

Make it a sandwich using your favorite brand of gluten-free bread or crackers or sourdough bread if you are avoiding fructans.

This dish pairs great with Tangy Low FODMAP Pickled Beets!

References

1. Health Encyclopedia. Fish, tuna, light, canned in water, drained solids, 1 cup, solid or chunks. University of Rochester Medical Center. https://www.urmc.rochester.edu/encyclopedia/content?contenttypeid=76&contentid=15121-1. Accessed August 4, 2025.