Dill tuna salad with apple, walnuts, and lemon vinaigrette

Mayonnaise hides watery tuna and soft apple. A vinaigrette does not, so the fix has to happen before the dressing goes on: drain the tuna hard, dice the apple small and toss it in lemon juice right away, and add the walnuts last so they don’t go soft. Built this way, dill tuna salad with apple and lemon vinaigrette holds its crunch for about an hour at room temperature and up to a day refrigerated, though the apple softens after that.

Does dill go with tuna?

Yes: dill’s grassy, slightly anise-like oils cut through the fattiness of canned tuna the way it does with fatty fish like salmon and gravlax, which is the classic pairing that put dill and fish together in the first place. In this recipe, 3 tablespoons (12 g) of chopped fresh dill is enough to season the whole batch without turning it into a dill salad with tuna in it. Dried dill works at one-third the volume, about 1 tablespoon, but you’ll notice it tastes flatter and more like hay than herb.

Is dill good in tuna salad, or does it overpower it?

Dill is good in tuna salad when it’s added fresh and chopped fine, because the dominant flavors here are lemon and apple, not dill; dill’s job is to add a cool, slightly sweet background note, not to lead. Overpowering happens at higher volumes than this recipe uses, generally above 1/4 cup (10 g) fresh per 10 ounces (284 g) of tuna, where the anise note starts to read as medicinal. If you’re unsure, start with 2 tablespoons and taste before adding the third.

Why a vinaigrette instead of mayonnaise

Mayo-based tuna salad with apples turns soupy fast, because mayonnaise doesn’t bind water the way it looks like it does; it just suspends it, and apple releases moisture as it sits, diluting the dressing into something greasy and thin. A lemon vinaigrette, an emulsion of 3 tablespoons (45 ml) olive oil to 2 tablespoons (30 ml) lemon juice with 1 teaspoon (5 ml) Dijon as the emulsifier, coats the tuna in a thin film instead of drowning it, and it doesn’t break down further once the apple starts weeping. The trade-off is texture: vinaigrette-dressed tuna salad is looser and more separated than the creamy kind, closer to a composed salad than a sandwich filling, so expect your bowl to look less uniform than a mayo-based version.

What goes wrong with tuna salad with apple and walnuts

Soggy, browned salad: the apple wasn’t tossed in acid immediately after cutting, or it sat dressed for more than an hour before serving. Apple flesh oxidizes within 5 to 10 minutes of cutting once exposed to air; a splash of lemon juice on contact (the recipe uses 1 teaspoon of the total lemon juice for this) slows the enzyme responsible, but it does not stop it indefinitely, so don’t expect your apple to stay pale much longer than that.

Watery, bland dressing: the tuna wasn’t drained hard enough before flaking. Canned tuna holds onto a surprising amount of packing liquid; press it against the side of the can or through a fine strainer with the back of a fork until no more liquid comes out, or your vinaigrette will be diluted before it hits the bowl.

Soft, chewy walnuts: they were added at the start instead of the end, or they weren’t toasted. Raw walnuts are already a little soft; toasting them 3 to 4 minutes in a dry skillet crisps the interior, and folding them in only at the final step, right before serving, keeps them from absorbing dressing and going limp in your bowl.

Swapping the apple, walnuts, and tuna, and the one swap that breaks it

Pear works in place of apple at the same 6-ounce (170 g) weight; use a firm variety like Bosc, since ripe pear turns to mush under the same dicing and tossing. Pecans or toasted sunflower seeds substitute for walnuts at the same 1/2 cup (50 g) volume. Canned salmon can replace the tuna outright, same 10-ounce (284 g) total weight, and the dill pairing gets, if anything, more traditional.

The one swap that doesn’t work: bottled lemon juice in place of fresh. Bottled juice is more acidic and often has a metallic, slightly bitter aftertaste from preservatives, and because this vinaigrette has no other strong flavor to hide behind, that off-note comes through directly in your finished salad. If fresh lemon isn’t available, cut the bottled juice by about 25% and add a pinch more Dijon to round out the flavor rather than using a straight swap.

Questions cooks ask about dill tuna salad

Is dill good in tuna salad?

Yes, in moderation. Fresh dill’s slightly sweet, grassy flavor complements the richness of canned tuna without competing with it, provided it’s kept to around 3 tablespoons (12 g) per batch rather than piled on.

Does dill go with tuna?

Yes; dill is a classic pairing with fatty and canned fish, most famously salmon, and it works the same way here by cutting through the tuna’s richness with a cool, herbal note.

Can I make tuna salad with apples and walnuts ahead of time?

You can prep the components separately up to a day ahead: dice the apple and toss it in lemon juice, toast the walnuts and cool them, and drain and flake the tuna. Combine and dress no more than 1 hour before serving, since dressed apple softens and walnuts lose their crunch the longer they sit in your vinaigrette.

What kind of tuna is best for this salad?

Tuna packed in olive oil gives a rounder flavor and a slightly softer flake than water-packed tuna; either works here, but if you’re using water-packed, drain it especially hard, since it carries more liquid weight. Two 5-ounce (142 g) cans, drained, is the right amount for this recipe.

Can I use dried dill instead of fresh?

Yes, at roughly one-third the volume: 1 tablespoon dried in place of 3 tablespoons fresh. The flavor is flatter and less bright, so add it early and let it sit in the vinaigrette for a few minutes to rehydrate before tasting.

How long dill tuna salad keeps, and what changes overnight

Refrigerate leftovers in an airtight container for up to 2 days. The apple continues to soften and the dill’s flavor mellows, so a squeeze of fresh lemon juice and a pinch of salt on day two restores most of the brightness lost overnight. Do not freeze this salad: apple and celery both turn mealy and waterlogged once thawed, and the vinaigrette separates into oil and liquid that won’t re-emulsify no matter how much you stir.