Ruth’s Chris Chilean Sea Bass Recipe: Buttery Miso Glaze With Crispy Skin

This restaurant-quality Chilean sea bass delivers the signature buttery richness and crispy skin that makes Ruth’s Chris famous. The miso glaze adds umami depth while maintaining the delicate flavor of the fish, creating a dish that’s elegant yet approachable for home cooks.

Mastering the technique requires precise temperature control and proper skin preparation. I’ll guide you through achieving that perfect sear and velvety interior, along with professional plating tips to recreate the upscale dining experience. Pair with steamed bok choy and jasmine rice for a complete meal worthy of special occasions.

Ingredients for Ruth Chris Chilean Sea Bass

These premium ingredients deliver Ruth’s Chris signature buttery richness and crispy skin at home.

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The Chilean sea bass quality is paramount. Opt for wild-caught fillets with translucent flesh and intact skin—Whole Foods or high-end seafood markets typically carry restaurant-grade product. Miso selection matters: white miso (shiro) provides delicate sweetness without overpowering. For the butter, Plugrá European-style offers superior fat content (82%) for that signature velvety finish. Grapeseed oil’s neutral flavor and high smoke point (420°F) are essential for achieving the crisp skin without burning.

No mirin? Substitute 1 tbsp rice vinegar + 1 tbsp sugar. Sake can be replaced with dry sherry in equal measure. For gluten-free adaptation, use tamari instead of soy sauce. The ginger and garlic should be freshly grated/minced—pre-prepped versions lack the necessary aromatic intensity. Scallions may be replaced with chives for milder flavor. Jasmine rice is traditional, but basmati works in a pinch with adjusted water ratios.

Store sea bass on ice in the refrigerator for up to 24 hours—never longer. The miso glaze keeps refrigerated for 1 week in an airtight container. Toast sesame seeds in a dry pan just before serving to preserve crunch. Prepared rice and bok choy should be served immediately for optimal texture. For make-ahead convenience, the glaze can be prepared 2 days in advance and reheated gently before use.

Step-by-Step Instructions for Chilean Sea Bass with Buttery Miso Glaze

Master the restaurant technique for achieving perfectly crisp skin and silky miso-glazed fillets every time.

Step 1: Prepare the Miso Glaze Base

In a small saucepan, combine the 3 tbsp white miso paste, 2 tbsp mirin, 2 tbsp sake, and 1 tbsp soy sauce. Whisk vigorously over medium-low heat until the mixture becomes completely smooth and the miso paste fully dissolves. This should take approximately 3-4 minutes—you’ll notice the raw alcohol scent of the sake dissipating as it cooks.

Remove from heat and whisk in 2 tbsp unsalted butter until fully melted and emulsified. The glaze should have a velvety texture and rich umami aroma. Set aside to cool slightly while you prepare the sea bass. This resting period allows the flavors to meld and prevents the glaze from breaking when applied to the fish.

Step 2: Sear the Sea Bass for Maximum Crispness

Pat the 4 pieces Chilean sea bass fillets completely dry with paper towels, focusing on the skin side—this is critical for achieving that signature crispy texture. Season both sides evenly with 1 tsp kosher salt and 0.5 tsp freshly ground black pepper. The salt will draw out any remaining surface moisture during the initial sear.

Heat 2 tbsp grapeseed oil in a large nonstick skillet over medium-high heat until shimmering. Place the fillets skin-side down and immediately press gently with a fish spatula for 10 seconds to prevent curling. Cook undisturbed for 4-5 minutes until the skin develops a deep golden crust and releases easily from the pan. The edges should appear slightly opaque about ¼-inch up the sides.

Step 3: Finish with the Miso Glaze

Flip the fillets and immediately reduce heat to medium. Add the remaining 4 tbsp unsalted butter, 1 tsp fresh ginger, and 2 cloves garlic cloves to the pan. As the butter melts, spoon it continuously over the fillets for 2 minutes—this basting technique ensures even cooking and flavor distribution.

Pour the reserved miso glaze over the fillets and tilt the pan slightly to pool the sauce. Cook for an additional 1-2 minutes until the fish reaches an internal temperature of 130°F and the glaze reduces to a glossy coating. The fillets should flake easily when tested with a fork but still appear slightly translucent in the center—they’ll continue cooking off-heat.

Step 4: Plate with Accompaniments

Transfer the fillets to a serving platter, spooning any remaining glaze from the pan over the top. Immediately garnish with thinly sliced scallions and 1 tsp sesame seeds while the glaze is still tacky—this ensures the toppings adhere beautifully. The contrast of bright green scallions against the caramelized glaze creates the signature presentation.

Serve alongside steamed 1.5 cups jasmine rice and 4 whole baby bok choy that have been quickly sautéed in the same pan to absorb any residual flavors. The rice should be fluffy with distinct grains, and the bok choy should retain slight crispness at the stem while the leaves wilt slightly. The complete dish should offer textural contrast in every bite—crispy skin, tender fish, and the slight crunch of sesame seeds.

Dietary Considerations for This Recipe

Gluten-Free Adaptations

This dish is naturally gluten-free when prepared with tamari instead of regular soy sauce. I always double-check that my white miso paste is certified gluten-free, as some brands process it with wheat. The mirin and sake should also be verified—look for labels like Eden Foods or Mikuni that guarantee gluten-free production. 🌾

Low-Carb/Keto Options

Skip the jasmine rice and serve with cauliflower rice instead—sauté it in the same pan after cooking the fish to absorb those delicious flavors. The miso glaze contains about 8g net carbs per serving, but you can reduce this by using 1 tbsp less mirin and adding 1 tsp erythritol for sweetness. The sea bass itself is zero-carb and packed with healthy fats.

Dairy-Free Modifications

Replace the unsalted butter with refined coconut oil (it has a neutral flavor) or vegan butter like Miyoko’s. The miso glaze will still emulsify beautifully, though the mouthfeel will be slightly lighter. For basting, use avocado oil—it has a high smoke point and buttery texture. Garnish with toasted coconut flakes instead of sesame seeds for added richness.

Pescatarian-Friendly

This recipe is naturally pescatarian, but I love adding seaweed salad as a side for extra oceanic flavors. If you’re serving strict vegetarians alongside, prepare the glaze separately before adding fish, then use it to toss roasted mushrooms or tofu steaks. The umami depth from the miso works beautifully with plant-based proteins too.

Lower-Sodium Adjustments

Use low-sodium soy sauce and reduce the kosher salt to ½ tsp. The miso already contributes saltiness, so taste before adding extra. I often skip salting the fish entirely and let the glaze provide all the seasoning. For the bok choy, steam it without salt and finish with a squeeze of fresh lemon to brighten flavors naturally.

Allergy Considerations

For those with sesame allergies, swap the seeds for crushed black peppercorns or poppy seeds. If garlic is problematic, use 1 tsp asafoetida powder (common in Indian cooking) for similar depth. Always confirm your sake and mirin are nut-free—some brands process in facilities with tree nuts. When in doubt, coconut aminos can replace soy sauce entirely. 💡

Frequently Asked Questions