Begin by draining the can of tuna thoroughly, then transfer it to a large mixing bowl. Next, finely chop the celery and onion, adding them to the bowl along with the mayonnaise and mustard. Sprinkle in salt and pepper to taste. Use a fork to mix everything together gently until well combined.

Taste the mixture and adjust the seasoning if necessary, adding more salt, pepper, or mustard according to your preference. Incorporate an extra tablespoon of mayonnaise for richer creaminess if desired.

To serve, scoop generous portions of the Tuna Salad onto thick slices of bread, or use crisp lettuce leaves as healthy wraps.

If you have any leftovers, place it in an airtight container in the refrigerator for up to 3 days. Drain excess liquid before serving.

Feel free to get creative! Add boiled eggs or a spoonful of sweet pickle relish for a delightful twist.