In a medium sized mixing bowl, place the tuna. Do not break up too finely, just enough to have small chunks. You want to mix this as little and as lightly as possible.
Squeeze the lemon juice over the fish.
Add the celery seed, salt, dill weed, parsley, pepper and cayenne. Add mayonnaise, tossing lightly, until enough mayo has been incorporated to bind the ingredients. Fold in the onion and celery.
Serve as a sandwich filling or in lettuce wraps.
Notes
Promptly store leftovers in an airtight container in the refrigerator, for up to 2 days.
Nutritional values are approximate and based on 1/6 the recipe.