Nobu Chilean Sea Bass Recipe: Miso-Marinated Melting Tenderness

This Nobu-inspired dish delivers the signature melt-in-your-mouth texture that made Chilean sea bass legendary.

Marinated in white miso for 48 hours, the fish transforms into something extraordinary—delicate, buttery, and tender beyond comparison.

Ingredients for Nobu Chilean Sea Bass

Short list. Big flavor. Nobu-level elegant simplicity right here.

The sea bass is the star here. Chilean sea bass (aka Patagonian toothfish) is what Nobu uses—look for sustainably sourced at Whole Foods or specialty seafood markets. Skin-on fillets hold up better to the long marinade. If buying frozen, thaw overnight in the fridge. The miso is non-negotiable—Saikyo white miso is traditional, but any white miso works.

No mirin? Dry sherry plus a pinch of sugar gets you close. Sake can be swapped with dry white wine, but the flavor will differ slightly. For the soy sauce, tamari works if you need gluten-free. The sugar balances the saltiness—don’t skip it. Fresh ginger and garlic are key; jarred minced versions won’t cut it for this level of dish.

Marinate exactly 48 hours (no less, no more) for that signature texture. Store miso paste in the fridge for 1 year. Cooked fish is best served immediately, but leftovers keep 2-3 days in the fridge. Reheat gently to avoid drying out.

Step-by-Step Instructions for Miso-Marinated Chilean Sea Bass

This is the method that transforms good sea bass into an unforgettable dish.

Step 1: Create the Miso Marinade

In a medium bowl, whisk together the 0.5 cup White Miso Paste, 0.25 cup Mirin, 0.25 cup Sake, 2 tbsp Soy Sauce, and 2 tbsp Granulated Sugar until smooth. The sugar should dissolve completely—this creates that signature sweet-savory Nobu glaze.

Add the 1 tbsp Fresh Ginger and 2 cloves Garlic Cloves, mixing well. I always let this marinade sit for 10 minutes before using to allow the flavors to meld. You’ll notice the mixture thickens slightly as the miso absorbs the liquids.

Step 2: Marinate the Sea Bass

Pat the 1.5 lb Chilean Sea Bass Fillets completely dry with paper towels—this ensures the marinade adheres properly. Place them in a shallow dish and pour the marinade over, turning to coat evenly. Cover and refrigerate for 2-3 days. Yes, days—not hours.

This extended marinating time is non-negotiable. The miso penetrates the flesh, transforming the texture into that buttery, melt-in-your-mouth consistency Nobu is famous for. Flip the fillets once daily to ensure even coverage.

Step 3: Sear the Fillets to Perfection

Remove the fillets from the marinade (reserve the marinade) and wipe off excess with your fingers. Heat the 2 tbsp Neutral Oil in a non-stick skillet over medium-high heat until shimmering. Add the fillets skin-side down and sear for 3-4 minutes until the skin is crisp and golden brown.

Gently flip and cook for another 2-3 minutes. The fish should release easily when ready—don’t force it. The interior will still look slightly translucent; it’ll finish cooking in the next step.

Step 4: Glaze and Finish

Pour the reserved marinade into the skillet and reduce heat to medium-low. Spoon the marinade over the fillets constantly for 2-3 minutes until it thickens into a glossy glaze and the fish flakes easily with a fork.

The sauce should coat the back of a spoon with a lacquer-like sheen. Be careful not to overcook at this stage—the residual heat will continue cooking the fish as it rests.

Step 5: Garnish and Serve

Transfer the fillets to serving plates. Drizzle any remaining glaze from the pan over the top. Garnish with the thinly sliced 2 whole Green Onions and serve immediately with the julienned 0.5 lb Daikon Radish on the side.

Offer the 1 tsp Wasabi Paste on the side for those who appreciate a little heat. The contrast of the sweet miso glaze with the sharp wasabi and crisp daikon completes the Nobu experience.

Pro Cooking Tips for This Dish

Marinade Mastery

Let the miso marinade sit for 10 minutes before using to allow flavors to meld. I always use Saikyo white miso—it’s the traditional choice for this dish. The sugar must dissolve completely to create that signature sweet-savory Nobu glaze. 💡

Perfect Marinating Time

Marinate the fillets for the full 48 hours—no less, no more. This extended time is non-negotiable for achieving that buttery, melt-in-your-mouth texture. Flip the fillets once daily to ensure even coverage.

Searing Technique

Heat your non-stick skillet over medium-high heat until the oil shimmers. Sear the fillets skin-side down for 3-4 minutes until the skin is crisp and golden brown. Don’t force the flip—the fish should release easily when ready.

Glazing Perfection

Reduce heat to medium-low when glazing and spoon the marinade constantly for 2-3 minutes. The sauce should thicken into a glossy, lacquer-like sheen. Be careful not to overcook at this stage—the residual heat will finish the job. 🔥

Resting and Serving

Transfer fillets to plates and drizzle with remaining glaze. Serve immediately with julienned daikon and green onions. The contrast of sweet miso with sharp wasabi completes the Nobu experience.

Frequently Asked Questions