Place the drained tuna in a medium-sized bowl and separate it gently with a fork, then add the celery, apple, mayonnaise, basil, lemon juice, salt, and pepper. Fold until the dressing coats the ingredients and the tuna still shows clear, tender flakes.
Cover the bowl and refrigerate the mixture for 15 minutes before serving. This brief chill allows the lemon and basil flavors to meld into the mayonnaise and gives the dressing a more settled texture.
Spoon the chilled salad over greens, layer it into a sandwich, or serve it with crackers. The finished mixture should look creamy and cohesive while retaining noticeable pieces of apple, celery, and tuna.
Notes
Texture tip: Flake the drained tuna gently with a fork rather than mashing it so the salad retains visible, tender flakes instead of turning into a paste.Apple handling: Dice the apple close to mixing time and toss with a little lemon juice to prevent browning and maintain a crisp bite.Storage: Keep the mixture covered in an airtight container in the refrigerator so the celery and apple stay crisp and the basil retains its aroma.Nutrition information is an estimate based on common ingredients and serving sizes. Values may vary depending on brands, portions, and substitutions.