Tramezzino Tonno e Carciofini

Behind the glass of a Venetian bar case, a row of these triangles sits domed and pale among thirty others, a few darker flecks showing along each cut edge. Inside is the meeting of two things an Italian kitchen has always kept on the shelf: a tin of tuna in oil and a jar of small artichokes under oil. The tuna does the bulk and the salt. The artichoke does the lift. Closed into soft white bread, the rich smear gains a green vegetal interruption every few bites, which is the entire reason this build sits in the case as its own choice next to the plain tuna one.

Worked with mayonnaise, oil-packed tuna becomes a mild even mass that fills the bread and reads as one long flat note. Quartered carciofini break that note. They land herbal, faintly vinegared, soft but holding their edges, a thread of something sour and grassy laid through a pale spread. The fish is the body; the artichoke is the punctuation. Neither has any heat or crunch to it, so the contrast the tongue registers is all flavour rather than texture, mild richness crossed by a quiet green tang.

The first sensation is cool dry crumb, then a faint slickness where the bind films the inner face of the bread, then the tuna spreading smooth and a little rich across the tongue. A beat later a quarter of artichoke arrives with a soft, almost stringy give and a lemony, lightly sour herbal note that wipes the fat away. The whole triangle holds cool throughout. Nothing is warm, nothing crackles, and the artichoke is the part the mouth keeps reaching back toward.

The build fails on liquid and on placement. Artichokes spooned in still wet with their marinade leak oil and vinegar into the crumb, and within an hour the base slice has gone grey and slumped. Quarters left too large sit as wet lumps and slide out of the diagonal face when the triangle is lifted. Heap them at one end and that end is sharp and herbal while the far corner is plain fish. Beat too much mayonnaise into the tuna and it goes to a loose paste that creeps out of the cut; too little and it crumbles dry. A working one pats the artichokes hard between paper, cuts them small, scatters them through, and mounds the whole toward the middle so the triangle stands up rather than sags.

It is bought the way the entire tramezzino case is bought, by leaning in and naming or pointing at the triangle you want and handing over a euro or two for it. The tuna-and-artichoke build sits in the row beside the plain tuna and the cooked ham in a bar in Venice or Bologna, read as a small step up from the cheapest fillings, the artichoke being the touch that makes it the more interesting of the plain ones. This is counter food eaten upright beside a glass at the aperitivo hour, settled on at the case rather than asked of a cook.

The triangles nearest this one keep the tuna and change its partner, and each stands on its own. Trade the artichokes for sliced olives and the accent turns dark and saline instead of green, the tuna-and-olive build. Bring in tomato and the filling gains water and a sweet edge along with a fresh moisture problem. Chop in hard-boiled egg and it drifts toward the egg-and-tuna register. One to set aside: the artichoke tramezzino with no fish at all is a vegetable build, not a leaner version of this; here the tuna carries the weight and the artichoke only seasons it.

Two pantry staples meeting in a triangle

This filling has no named creator and no founding counter. A bar case carries dozens of fillings at once, and tuna with artichoke is the obvious pairing of two preserves every household already owned; no single counter can document a claim to having joined them first.

The datable history sits in the two staples. Tuna sealed in oil became a kitchen constant once Italian canning industrialised in the decades around 1900, above all in Sicily and Sardinia, which turned a coastal catch into a tin a family kept through the year. The artichoke half draws on the long practice of preserving vegetables sott'olio, under oil: small artichokes trimmed, cooked, and held in oil are a standard conserva, the jar of carciofini as fixed a pantry item as the tuna tin beside it.

The triangle that carries them was devised at the Turin caffè Mulassano in 1925 and spread through Italian bars as a vehicle for whatever a case could hold. It appears among Piedmont's traditional regional food products on the Italian agriculture ministry's inventory, opened in 1999, though the tuna-and-artichoke version earns no separate entry there and leans on what is documented for the triangle as a whole: Turin, Mulassano, 1925.