Part 2/6:
½ cup of finely diced celery.
½ cup of finely diced onion.
Mayo: 1 to 1¼ cups of mayonnaise (Hellmann’s is recommended for its thick texture).
Optional Thickness: Crush some crackers or use bread to absorb excess moisture if needed.
Bread for Serving: Rye bread and New York deli rolls (hard rolls) are traditional, but feel free to use what you like.
Cheese: American, cheddar, or Swiss cheese for a tuna melt, if desired.