15-Minute Low Carb Soy-Marinated Tuna Poke Bowl
Fresh sushi-grade tuna marinated in soy, rice vinegar, and sesame oil, served over cucumber and avocado with spicy mayo and optional garnishes. Bright, umami-rich, and protein-forward, this poke bowl suits quick weeknight dinners or light lunches. The raw preparation and minimal cooking make it ideal for those seeking restaurant-quality seafood at home with zero carb-heavy components.
Ingredients
Instructions
- 1
Combine soy sauce, rice vinegar, and sesame oil in a bowl.
- 2
Dice tuna into bite-sized cubes and stir into marinade. Let sit 10-15 minutes.
- 3
Mix mayonnaise and sriracha in a small bowl.
- 4
Slice cucumber, avocado, green onion, and jalapeño.
- 5
Arrange cucumber and avocado on serving plate. Drain tuna and place in center.
- 6
Top with green onion, jalapeño, and any optional garnishes.
- 7
Drizzle with spicy mayo and serve immediately.
Tips
Use the freshest sushi-grade tuna available from a reputable fishmonger. If unavailable, substitute cooked tuna or firm white fish.
Drain tuna thoroughly after marinating to prevent a soggy bowl; pat dry with paper towels.
Assemble immediately before serving to keep avocado from browning and tuna at optimal temperature.
Good to Know
Tuna poke does not store well due to raw fish. Serve within 2 hours of assembly. Store marinated tuna separately in airtight container up to 24 hours.
Marinate tuna up to 24 hours ahead. Prepare spicy mayo and slice vegetables up to 4 hours ahead. Assemble only when ready to serve.
Serve immediately on chilled plates. Pairs well with sushi rice (if carbs desired) or standalone as keto/low-carb option. Serves 2 as main, 4 as appetizer.
Common Mistakes
Marinate tuna too long to avoid mushy texture; 10-15 minutes is optimal.
Skip draining tuna well to avoid a watery, diluted bowl.
Prep avocado far in advance to avoid browning; add last.
Substitutions
Gluten-Free Swaps
General Alternatives
FAQ
Can I use non-sushi-grade tuna?
Sushi-grade tuna is safest for raw consumption. If unavailable, briefly sear the exterior until opaque or use cooked tuna instead. Check with your fishmonger on safety.
What if I don't eat raw fish?
Sear tuna cubes 30-45 seconds per side for rare, or cook through. Substitute salmon, firm white fish like mahi-mahi, or grilled shrimp. Cooking times vary.
How long can I keep the marinated tuna?
Up to 24 hours refrigerated in an airtight container. Longer storage degrades texture. Drain before serving. Assembled poke should be eaten within 2 hours.