Keto Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. 
Serving Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Keto Tuna Salad
A quick, savory tuna salad enriched with avocado and mayo for a satisfying, high-fat midday meal.
Contains common allergens
In the app, Listahan checks these against your household automatically.
Good to know
- Ready in under 30 minutes
Matched from this dish's own ingredients and timing. Browse more: 30-minute meals
Instructions
6 steps- 1
Open the cans of tuna and drain the water completely. Flake the tuna with a fork into a medium mixing bowl.
- 2
Add the mayonnaise, sugar-free dill pickle relish, and fresh lemon juice to the tuna.
- 3
Stir the mixture vigorously until the tuna is well combined with the wet ingredients.
- 4
Gently fold in the diced avocado, being careful not to mash it entirely so you retain some creamy chunks.
- 5
Taste the mixture and season with salt and pepper as needed.
- 6
Serve over a bed of spinach, stuffed inside half a bell pepper, or scooped up with cucumber slices.
Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Listahan Family Score™
63/100
Works for many families
Score reflects how well this recipe fits a typical busy household. In the app, your Family Score is personalized to your household's allergens, kids, and pantry.
Nutrition
per serving135
Calories
1 g
Protein
3 g
Carbs
14 g
Fat
Estimated per serving. Actual values depend on the brands and portions you use.
Listahan cooking guide
Chef notes & practical guide
Technique notes, ingredient swaps, serve-alongside ideas, storage guidance, and equipment for this recipe.
Cultural context
Canned tuna salad became a staple of American lunch culture in the mid-20th century as canned tuna became one of the most affordable and shelf-stable protein sources available. Like chicken salad and egg salad, it is inherently keto-compatible because the base ingredients — canned fish, mayonnaise, and vegetables — contain almost no carbohydrates. The version that appears on most American tables reflects postwar convenience cooking: canned solid white albacore, Best Foods or Hellmann's mayo, and diced celery, sometimes with pickles or red onion. The keto adaptation simply removes any bread and serves it in a lettuce cup or on cucumber slices.
Listahan note
This version uses water-packed solid white albacore drained and gently flaked rather than broken down fine, keeping the texture of the tuna as the main character rather than producing a uniform paste.
Technique cues
- Drain the canned tuna thoroughly — press it firmly against the can lid or use a fine mesh strainer — because excess water dilutes the mayonnaise immediately and makes the salad watery within minutes.
- Flake the tuna into the bowl with a fork using a lifting motion rather than stirring or mashing; large, distinct flakes of tuna in a creamy dressing are a very different texture experience from a homogenous gray paste.
- Taste and adjust seasoning after all the mix-ins are incorporated rather than while the tuna is plain — the mayo, pickle brine, and celery all contribute salt and acidity that can make the mixture taste properly seasoned before you have added any additional salt.
Kitchen flow
- Parallel prep
- While draining the tuna, dice the celery and pickles so everything is ready to combine in one step.
- Make-ahead
- Keto tuna salad is best after 20 to 30 minutes in the fridge when the flavors meld; it keeps well for up to 3 days if celery is added fresh each serving.
- Leftover move
- Use leftover tuna salad as a filling for halved mini bell peppers or nori sheets rolled into keto temaki-style cones.
- Cleanup rhythm
- Everything mixes in one bowl with a fork; the only item that needs thorough washing is the strainer used to drain the tuna.
Ingredient brief
Role, handling, and swap guidance for each key ingredient.
canned solid white albacore tuna in water
protein base
Purpose: Solid white albacore has a firmer texture and milder flavor than chunk light tuna, producing a better final texture when flaked and dressed.
Handling: Drain and press thoroughly, then flake gently with a fork into large pieces rather than fine strands.
Adaptation: Oil-packed tuna packed in good quality olive oil is richer and requires less mayonnaise to achieve the right creaminess.
full-fat mayonnaise
binder and richness
Purpose: Full-fat mayo provides the creamy coating that holds the salad together and contributes the fat that makes this a satisfying keto meal.
Handling: Start with 2 tablespoons per can of tuna and adjust upward to taste — the right amount binds without drowning the fish flavor.
Adaptation: Avocado mayo or homemade mayo with avocado oil gives a cleaner fat profile with the same creamy function.
dill pickles or pickle relish
acid and crunch
Purpose: Pickle provides the tartness that prevents tuna salad from tasting rich and flat and adds textural contrast against the soft tuna.
Handling: Dice pickles finely and blot on a paper towel before adding to prevent excess brine from thinning the mayo.
Adaptation: Capers give a similar briny, acidic note with a more sophisticated flavor and are also keto-compatible.
celery
texture and freshness
Purpose: Diced celery is the structural counterpoint to the soft, creamy tuna and mayo — without it, the salad is a uniform soft mass.
Handling: Dice finely so each bite has a small hit of crunch throughout rather than large disruptive chunks.
Adaptation: Diced red bell pepper adds sweetness and a similar crunch without the celery flavor.
Dijon mustard
tang and emulsifier
Purpose: A small amount of mustard sharpens the mayo and adds depth that elevates the salad from plain to layered.
Handling: Stir into the mayo before combining with the other ingredients for even distribution.
Adaptation: A teaspoon of lemon juice achieves similar acidity without the mustard flavor.
Technique notes
- A small amount of lemon zest added to the mayo before mixing adds a brightness that lemon juice alone cannot provide because the aromatic oils in the zest do not dilute the texture the way juice does.
- For an elevated version, replace half the mayonnaise with full-fat sour cream and add a tablespoon of fresh dill — the tanginess of the sour cream makes a noticeably better tuna salad.
- Serving the tuna salad in an avocado half rather than lettuce cups adds healthy fat, additional volume, and a creaminess that complements the mayo without competing with it.
Ingredient swaps
- Egg-free direction
- Use mashed avocado seasoned with lemon juice and garlic powder in place of mayonnaise for an egg-free binder that is naturally creamy and keto-compatible.
- Lower-sodium direction
- Use low-sodium canned tuna, skip the pickles in favor of diced fresh cucumber, and use unsalted mayo; the salad will be considerably lighter in sodium.
- Gluten, dairy & nut-free direction
- As written, the base recipe is tuna, mayonnaise, avocado, and dill pickle relish — no wheat, dairy, or tree-nut ingredient in that list; relish and pickle brands can add wheat-based vinegar or starch, so check the label.
Serve alongside
- butter lettuce cups or cucumber rounds for serving
- sliced avocado with sea salt
- dill pickle spears
- sparkling water with lemon
- unsweetened iced green tea
Serving suggestions only — check pairings for your household's allergens.
Storage & reheating
- Keto tuna salad keeps in the fridge for up to 3 days in an airtight container; stir before serving as the mayo can pool. If storing with celery mixed in, expect it to soften by day 2 — add fresh celery at serving for crunch. Do not freeze mayo-based tuna salad; it becomes watery and curdled after thawing.
Equipment
- fine mesh strainer or colander for draining tuna
- large mixing bowl
- fork for flaking and mixing
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