Drain the tuna well. Press out excess liquid with the can lid or a fine mesh strainer.
Drier tuna gives you a creamier, more flavorful salad.
Make the dressing. In a bowl, whisk together mayonnaise, Dijon, lemon juice, a pinch of salt, pepper, and paprika. Taste and adjust the acid or salt as needed.
Prep the mix-ins. Finely chop celery, onion, pickles, and herbs. Smaller pieces distribute better and give even crunch in every bite.
Combine. Add the drained tuna to the bowl with the dressing.
Break it up with a fork, then fold in the celery, onion, pickles, and herbs. Stir gently until evenly coated.
Adjust texture. If it’s too dry, add another spoon of mayo or a splash of olive oil. If it’s too tangy, a pinch of salt or extra mayo helps balance it.
Optional add-ins. Fold in chopped hard-boiled egg for extra protein, capers for briny pop, or hot sauce for heat.
Chill briefly. Let it rest in the fridge for 10–15 minutes.
Flavors meld and the texture improves.
Serve. Spoon into lettuce cups, on cucumber rounds, in an avocado half, or enjoy on its own.