Tuna and White Bean Salad, from a Tin, a Jar and a Lemon
Tonno e fagioli is the Tuscan proof that lunch can come entirely from the shelf: white beans, good tinned tuna, thin red onion and a sharp dressing, assembled in fifteen minutes without turning on the stove. Because nothing is cooked, the whole dish is a purchasing decision. Tuna packed in olive oil, in whole fillets, flakes into rich, distinct pieces. The white tuna on Spanish labels is albacore, the bonito del norte, and ventresca is its belly, the cut to bring out when this salad is dinner for someone worth impressing. Two moves separate a great version from a dull one. The onion soaks in vinegar for ten minutes, which softens its raw bite and turns it pink. And the beans are dressed first, on their own, so they drink the vinaigrette before the tuna is folded in. The dressing itself begins with the oil in the tuna tin, which is a seasoned ingredient and not packaging, per the tin-oil rule.
Ingredients, for four
- 2 tins (220 to 250 g total) white tuna fillets in olive oil
- 500 g cooked cannellini or other white beans (two 400 g tins, or one 700 g jar), drained and rinsed
- 1/2 small red onion, sliced as thin as possible
- 3 tablespoons red wine vinegar, divided
- 4 tablespoons extra virgin olive oil, plus the oil from the tuna tin
- 1 tablespoon capers, rinsed (optional)
- A handful of flat-leaf parsley, roughly chopped
- Zest of half a lemon, plus a squeeze of juice
- Fine sea salt and coarsely ground black pepper
- Optional: 1 rib celery, sliced thin, or a handful of halved cherry tomatoes in summer
Method
- Soak the onion. Slice it as thin as the knife allows, toss it with one tablespoon of the vinegar and a pinch of salt, and let it stand ten minutes. An onion's sharpness comes from sulfur compounds created the moment its cells are cut, and the vinegar soak draws off and tames that heat while the salt softens the texture. The slices come out pink, crisp and gentle.
- Rinse the beans. Drain them and rinse gently under cold water until the water runs clear, then drain well. Draining and rinsing carry off the thick canning liquid and roughly forty percent of the sodium along with it, which matters in a dish that also contains tuna and capers. Handle them like eggs; broken beans make a paste, whole beans make a salad.
- Dress the beans first. In the serving bowl, fold the beans with the remaining two tablespoons of vinegar, the oil poured off the tuna tin, the olive oil, a good pinch of salt and plenty of coarse black pepper. Let them stand while the onion finishes soaking. This is the house vinaigrette ratio of roughly three parts oil to one of vinegar, built in the bowl, and the standing time is when the beans absorb it.
- Flake the tuna. Lift the fillets out and break them into large pieces with a fork. The difference between this salad and a deli tub is the size of the flake; big pieces stay rich and distinct, mashed tuna turns the whole bowl gray.
- Combine. Fold the tuna, the drained onion, the capers and the parsley into the beans with as few strokes as possible. Add the lemon zest and a squeeze of juice, then taste: it should be bright enough that the beans do not taste sleepy, and with tuna and capers it will need less salt than expected.
- Serve. Room temperature, always; the fridge mutes everything in this dish. A thread of fresh oil over the top, more pepper, and bread that can sweep the bowl.
Why it went wrong
| Symptom | Cause | Fix |
|---|---|---|
| Harsh and oniony | The onion went in raw, or thick | Slice paper thin and give it the full ten-minute vinegar soak |
| Bland | Served cold from the fridge, or the beans were never dressed alone | Come up to room temperature; dress the beans first and let them stand |
| Dry and chalky | Tuna packed in water, or the tin oil went down the drain | Buy fillets in olive oil and build the dressing on the tin oil |
| Muddy and gray | The tuna was mashed and overmixed | Large flakes, folded in last, with as few strokes as possible |
| Mushy | Overcooked budget beans, or rough stirring | Use jarred beans or a good tin, rinse gently, fold rather than stir |
Notes and variations
The tuna carries the dish. Whole fillets in olive oil, not chunks in water; the fillet is a piece of fish, and this recipe treats it like one. Ventresca, the belly cut, turns the same fifteen minutes into an occasion. A complete guide to tinned tuna and ventresca is on its way to the Dispatch. The beans are the other half of the purchase. Jarred beans, cooked slowly in their own liquid, hold their shape and stay creamy. Cooking heirloom beans from dry, per the heirloom bean method, is the upgrade that costs a day and repays it. In Denver, the salad itself needs no correction because nothing boils, but the from-dry upgrade does: at the city's altitude water boils near 202°F instead of 212°F, and dried beans can take up to twice as long to soften, per the altitude guide. Start them early or use the pressure cooker. Variations: thin celery for crunch, halved cherry tomatoes in August, a chopped hard-boiled egg to make it supper, or pitted green olives in place of capers to push it toward the aperitivo hour. The oil matters everywhere here, so use a bottle chosen with the buying guide in hand.
The tuna, the beans, the capers and the oil, including Conservas de Cambados white tuna and ventresca and Ati Manel fillets in olive oil, are at 263 Josephine Street in Cherry Creek, Denver, and ship nationwide from theambrosianpantry.com.
Sources & Further Reading
- The Pantry Dispatch: How to Cook Heirloom Beans Perfectly
- Harold McGee, On Food and Cooking (2004), on the onion family's sulfur chemistry
- Duyff, Mount and Jones, "Sodium Reduction in Canned Beans After Draining, Rinsing," Journal of Culinary Science & Technology 9(2), 2011
- Colorado State University Extension: High Elevation Food Preparation Guide
