Start by gathering all your ingredients. Drain the canned tuna or salmon well, and set it aside in a mixing bowl. Chop the sun-dried tomatoes, celery, red onion, and dill finely.
In the mixing bowl, add the chopped sun-dried tomatoes, celery, red onion, and fresh dill to the flaked tuna or salmon.
Spoon in the hummus, and add 1 to 2 tablespoons of stone ground mustard. Mix everything together until well incorporated.
Sprinkle in sea salt and black pepper according to your preference. Give it another good mix to ensure the seasoning is evenly distributed.
For the best flavor, let the salad chill in the refrigerator for at least 30 minutes before serving. This will allow the flavors to meld beautifully.
