Zesty Avocado-Lime Ceviche with Sea Salt

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A refreshing, electrolyte-rich seafood dish featuring fresh tuna marinated in lime juice and avocado, perfect for easing headaches and nausea during Whole30. This Mediterranean-inspired Whole30 recipe, ready in about 20 minutes, pairs fresh tuna, fresh lime juice, avocado for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 2, so it slots cleanly into a Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Serves 2 Mediterranean cuisine 320 cal/serving
Build a week of meals around this recipe → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Affiliate disclosure: AislePrompt may earn a commission on qualifying purchases made through Amazon links, at no additional cost to you. See our policy →

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Knives & cutting boards → Shop all kitchen tools →

Instructions

  1. Step 1: Dice 8 oz fresh tuna into 1/2-inch cubes and place in a medium bowl. Add 3 tbsp fresh lime juice, 1/4 tsp sea salt, and 1 tsp avocado oil, then gently toss to coat. Refrigerate for 15 minutes to marinate.
  2. Step 2: While tuna marinates, cut 1 medium avocado in half, remove pit, and dice the flesh into 1/2-inch cubes. Add to the bowl with the tuna mixture along with 2 tbsp finely diced red onion and 2 tbsp chopped cilantro. Gently fold until combined, being careful not to mash the avocado.
  3. Step 3: Taste and adjust seasoning with an additional pinch of sea salt if needed. Serve immediately chilled, garnished with extra cilantro for a vibrant, headache-relieving meal.

Frequently asked questions

How long does Zesty Avocado-Lime Ceviche with Sea Salt take to make?

Total time is about 20 minutes (20 min prep + 0 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Zesty Avocado-Lime Ceviche with Sea Salt?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep fresh tuna from drying out.

Can I substitute ingredients in Zesty Avocado-Lime Ceviche with Sea Salt?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Zesty Avocado-Lime Ceviche with Sea Salt for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Zesty Avocado-Lime Ceviche with Sea Salt?

Mediterranean whole30 like this pair well with a compliant starch (roasted sweet potato, cauliflower rice, or plantains), a crisp salad dressed with olive oil and lemon, and sliced fruit. Skip grains, legumes, dairy and added sugar — none of them are Whole30-compliant. Tap "Plan a meal with the AI" to get specific side suggestions.

What others are saying

Related recipes