
Growing up in Chicago, my kitchen was a melting pot of flavors and traditions. My mother, with her Polish roots, and my grandmother Elizabeth, who made the best apple cake, filled our home with the aromas of hearty, comforting dishes. But it was during a family trip to the coast, where the sea breeze mingled with the scent of fresh seafood, that I first encountered the magic of tuna tartare. Fast forward to today, and my version of Tuna Tartare Jewel Seaweed is a beloved staple at our family gatherings. It’s a dish that celebrates the raw beauty of fresh ingredients, much like the vibrant city I call home.
This recipe is special to me because it combines the elegance of a classic tartare with a modern twist, thanks to the jewel-like seaweed that adds both texture and a burst of umami. It’s a dish that not only pays homage to my culinary journey but also brings a touch of the ocean to our landlocked Chicago table. Join me as I share this delightful recipe that’s sure to become a favorite in your home too.
Why You’ll Love This Recipe
If you’re looking for a recipe that’s both sophisticated and simple, Tuna Tartare Jewel Seaweed is your answer. This dish is not only visually stunning but also incredibly easy to prepare. With its fresh, high-protein tuna and nutrient-rich seaweed, it’s a healthy choice that doesn’t compromise on flavor. Whether you’re hosting a dinner party or simply treating yourself to something special, this tartare is sure to impress.
Ingredients
- 12 oz fresh sushi-grade tuna, finely diced
- 1 tablespoon soy sauce
- 1 tablespoon sesame oil
- 1 teaspoon rice vinegar
- 1 teaspoon freshly grated ginger
- 1 avocado, diced
- 1 tablespoon finely chopped chives
- 1 tablespoon lime juice
- 2 tablespoons jewel seaweed, rehydrated
- Salt and pepper to taste
- Optional: sesame seeds for garnish

Step-by-Step Instructions
- In a medium bowl, combine soy sauce, sesame oil, rice vinegar, and grated ginger. Stir well to create the marinade.
- Add the diced tuna to the marinade, ensuring each piece is well-coated. Let it sit for about 10 minutes to absorb the flavors.
- In a separate bowl, gently toss the diced avocado with lime juice to prevent browning.
- Rehydrate the jewel seaweed according to package instructions and drain well.
- Combine the marinated tuna, avocado, chives, and jewel seaweed in a large bowl. Mix gently to avoid mashing the avocado.
- Season with salt and pepper to taste. For an extra touch, sprinkle sesame seeds on top.
- Serve immediately, or chill for up to 30 minutes before serving to allow the flavors to meld.
What Makes This Recipe Special
- Quick and easy to prepare
- Packed with flavor and nutrition
- Perfect for any occasion
- Customizable to your taste preferences
- Budget-friendly ingredients
Expert Tips for Success
For the best results, always use the freshest sushi-grade tuna you can find. It makes all the difference in the flavor and texture of the dish. When dicing the tuna, aim for uniform pieces to ensure even marination. If you’re new to working with seaweed, jewel seaweed is a great choice for its mild taste and beautiful appearance. Just be sure to rehydrate it properly to bring out its full potential.
Cooking Tools
When I make Tuna Tartare Jewel Seaweed, my go-to tool is the MOSFiATA 8″ Professional Chef’s Knife. It makes dicing the tuna and avocado a breeze. I also find the Electric Knife Sharpener (3-stage diamond) invaluable for keeping my knives in top condition. For mixing the tartare ingredients, the Silicone Utensils Set – 12 pcs ensures I can gently combine everything without damaging the delicate ingredients.

Variations and Substitutions
Feel free to experiment with this recipe by adding your favorite ingredients. Swap out the avocado for mango for a tropical twist, or add a dash of chili flakes for some heat. If you’re looking for a gluten-free option, use tamari instead of soy sauce. The jewel seaweed can be replaced with wakame or nori if you prefer a different seaweed texture.
Serving Suggestions
Tuna Tartare Jewel Seaweed is best enjoyed as a starter or light main course. Serve it with crispy wonton chips or on a bed of mixed greens for added crunch. A chilled glass of white wine or sake pairs beautifully with the fresh flavors of the tartare. For a complete meal, consider serving alongside a simple cucumber salad or miso soup.

FAQs
Can I prepare tuna tartare in advance?
While it’s best to serve tuna tartare fresh, you can prepare the components ahead of time. Dice the tuna and avocado, and mix the marinade a few hours in advance. Combine everything just before serving to ensure the freshest taste.
How do I know if my tuna is sushi-grade?
Sushi-grade tuna is typically labeled as such at seafood markets or specialty stores. It should have a bright, even color and a fresh, ocean-like smell. Always ask your fishmonger if you’re unsure.
Final Thoughts
I hope you enjoy making Tuna Tartare Jewel Seaweed as much as I do. It’s a dish that brings a touch of elegance and a burst of flavor to any meal. Whether you’re a seasoned chef or a home cook looking to try something new, this recipe is sure to delight.
👉 I hope you loved making this Tuna Tartare Jewel Seaweed—it’s a little taste of the ocean right in your own kitchen. If you’re looking for more culinary adventures, why not try my Salmon Poke Bowl, Spicy Tuna Roll, or Seafood Paella? Each recipe is a journey of flavors and textures that will transport you to new culinary heights. Join us on our Facebook Page and Facebook Group—and don’t forget to follow on Pinterest for daily inspiration!

Main Course · American · Medium
tuna tartare jewel seaweed: 8 Simple & Tasty Recipes
A sophisticated yet simple dish combining fresh tuna with jewel-like seaweed for a burst of flavor.
Keep the screen of your device on while you follow the steps.
- In a medium bowl, combine soy sauce, sesame oil, rice vinegar, and grated ginger. Stir well to create the marinade.
- Add the diced tuna to the marinade, ensuring each piece is well-coated. Let it sit for about 10 minutes to absorb the flavors.
- In a separate bowl, gently toss the diced avocado with lime juice to prevent browning.
- Rehydrate the jewel seaweed according to package instructions and drain well.
- Combine the marinated tuna, avocado, chives, and jewel seaweed in a large bowl. Mix gently to avoid mashing the avocado.
- Season with salt and pepper to taste. For an extra touch, sprinkle sesame seeds on top.
- Serve immediately, or chill for up to 30 minutes before serving to allow the flavors to meld.