Making Classic Tuna Salad is straightforward if you follow these easy steps:

1. Prepare the Tuna: Drain the canned tuna to remove excess liquid. Flake it into a medium mixing bowl using a fork.
2. Mix Base Ingredients: Add mayonnaise and Dijon mustard to the flaked tuna. Stir until well combined.
3. Add Vegetables: Fold in diced celery, red onion, and cucumber gently for a crunchier texture.
4. Season: Add lemon juice, salt, and pepper to taste. If desired, mix in chopped fresh parsley for added flavor.
5. Chill: Cover the bowl with plastic wrap or a lid and refrigerate for at least 30 minutes for the flavors to meld (optional).
6. Taste Test: Before serving, taste the salad and adjust seasoning if necessary.

These steps will guide you in creating this incredible salad effortlessly. The process is quick and manageable, even for novice cooks.