Ingredients

3 tablespoons fresh lemon juice

1 tablespoon Dijon mustard

Sugar

1/4 cup extra-virgin olive oil

Kosher salt and freshly ground pepper

1 apple (such as Honeycrisp)

1/2 bulb fennel, thinly sliced

Jar of tuna in oil (such as Oritz White Tuna in Organic Extra-Virgin Olive Oil)

Mayonnaise

Finely chopped fresh basil leaves

Wheat crackers and escarole leaves, for serving

Preparation

Whisk together lemon juice, Dijon mustard, a pinch of sugar, and extra-virgin olive oil; season with kosher salt and freshly ground pepper. Cut the apple into matchsticks and toss with dressing. Add sliced fennel and a jar of tuna in oil; toss to combine. Pack in a bento box or other resealable container.

Stir together mayonnaise and finely chopped fresh basil leaves; season with salt and pepper. Pack in a small compartment of your bento box (or a separate resealable container). Eat tuna salad with basil-mayo, wheat crackers, and escarole leaves.