Fresh Catch Tuna Tartare with Cucumber Relish

By AislePrompt Editorial · Published 2026-04-03 · Updated 2026-04-03

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are drafted and published.

A sophisticated raw dish featuring premium tuna mixed with bright cucumber relish and fresh herbs, served chilled. This Japanese-inspired seafood recipe, ready in about 25 minutes, layers sushi-grade tuna, cucumber, red onion into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 320 calories and feeds 2, so it slots into a weekend bake or a special-occasion dessert tray. 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: 25 min Serves 2 Japanese cuisine 320 cal/serving

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Ingredients

8 oz, finely diced sushi-grade tuna
1/2 cup, finely diced cucumber
2 tbsp, minced red onion
2 tbsp, chopped fresh cilantro
1 tbsp lime juice
1 tsp soy sauce
1/2 tsp sesame oil
1/4 tsp sambal oelek
1/4 cup, diced avocado

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Instructions

Step 1: In a medium bowl, gently combine diced tuna, cucumber, red onion, and cilantro.
Step 2: Whisk together lime juice, soy sauce, sesame oil, and sambal oelek until well blended.
Step 3: Pour dressing over tuna mixture and fold gently with a rubber spatula until evenly coated (avoid overmixing).
Step 4: Cover and refrigerate for 15 minutes to allow flavors to meld.
Step 5: Just before serving, fold in diced avocado and gently toss.
Step 6: Transfer to a chilled serving plate, garnish with extra cilantro, and serve immediately with rice crackers.