Classic Italian Tuna Tea Sandwich

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Tramezzino al Tonno is a beloved Italian tea sandwich featuring a creamy tuna filling tucked between thin slices of soft, crustless white bread. Originating in northern Italy and popularized in elegant cafés from Turin to Milan, these tidy triangles are a staple of aperitivo hour. The simple but well-balanced combination of good-quality tuna, mayonnaise, and bright briny accents delivers pure, satisfying flavor in every bite.

Nutrition Facts

Per serving (estimated)

• 475 kcalCalories
• 28 gFat
• 5 gSaturated Fat
• 30 gCarbs
• 2 gFiber
• 4 gSugar
• 24 gProtein
• 720 mgSodium
• 280 mgPotassium
• 140 mgCalcium
• 3 mgIron
• 3 mgVitamin C
• 120 mcgVitamin A

Ingredients

For the tuna filling

• 2 cans (5 oz / 140 g each) tuna in olive oil, drained
• 1/3 cup (75 g) good-quality mayonnaise
• 2 tablespoons capers in brine, drained and roughly chopped
• 10 pitted Taggiasca or black olives, thinly sliced
• 1 tablespoon fresh lemon juice
• 1 tablespoon fresh flat-leaf parsley, finely chopped
• 1 hard-boiled egg, finely chopped
• Fine sea salt and freshly ground black pepper, to taste

For assembly

• 8 slices soft white sandwich bread (pancarré or milk bread), about 1/2 inch thick
• 2 tablespoons unsalted butter, softened (optional)
• 4 small butter lettuce or tender lettuce leaves, optional

Directions

1. Place the egg in a small saucepan, cover with cold water, and bring to a boil over high heat. Cook for 10 minutes, then transfer to a bowl of ice water. Once cool, peel and finely chop.
2. In a medium bowl, flake the drained tuna with a fork, breaking up any large chunks into bite-sized pieces.
3. Add the mayonnaise, chopped capers, sliced olives, lemon juice, parsley, and chopped egg to the tuna. Fold gently until just combined, keeping some texture.
4. Season with salt and pepper to taste. The mixture should be creamy and spreadable; add a spoonful more mayonnaise if it looks too dry.
5. Using a sharp serrated knife, carefully trim the crusts from all 8 slices of bread to create neat, pale rectangles.
6. Optional: lightly spread one side of each bread slice with softened butter to add richness and create a barrier against sogginess.
7. Divide the tuna mixture evenly among 4 slices of bread and spread to the edges. Top with a lettuce leaf if using, then close each sandwich with a second slice of bread, buttered side down.
8. Press each sandwich gently with the palm of your hand to compact, then cut each into 2 triangles on the diagonal using a sharp knife (wipe the blade clean between cuts).
9. Arrange on a serving platter, cover loosely with a slightly damp paper towel, and chill for 10 minutes before serving so the flavors meld and the sandwiches hold their shape.

Cook’s Notes

• Use high-quality Italian tuna packed in olive oil (such as Rio Mare or Callipo); it is the soul of the sandwich and worth the splurge.
• Keep the filling slightly chunky rather than over-mixing for the best texture and mouthfeel.
• For the cleanest cuts, chill the assembled sandwiches for 10 minutes and use a long, very sharp knife, wiping the blade between each cut.
• Serve within a few hours for the softest bread; if making ahead, store in an airtight container in the fridge for up to 24 hours.
• For a heartier variation, add a thin slice of ripe tomato and a few thin rings of red onion before closing the sandwich.

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