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Sesame Crusted Mahi Mahi With Soy Shiso Ginger Butter Sauce

I still remember the first time I tasted mahi mahi. It was on a tiny, sun-drenched patio overlooking the turquoise waters of Maui. The fish, simply grilled with a squeeze of lemon, was unlike anything I’d ever had – firm, flaky, and subtly sweet. That simple preparation ignited a lifelong love for this versatile fish, and I’ve been experimenting with different ways to showcase its delicate flavor ever since. This sesame-crusted version, with its rich and vibrant soy shiso ginger butter sauce, is a sophisticated twist on that initial, unforgettable bite.

Recipe Overview

Prep Time: 15 minutes
Cook Time: 20 minutes
Total Time: 35 minutes
Servings: 6
Dietary Type: Pescatarian

Ingredients

3 shallots, minced
2 teaspoons minced fresh gingerroot
1 lemon, juice of
½ cup sake or ½ cup dry white wine
½ cup heavy cream
½ cup unsalted butter, chilled and cut into small cubes
3 tablespoons soy sauce
4 shiso leaves
Kosher salt
White pepper
2 tablespoons canola oil
6 (6 ounce) mahi mahi fillets
4 tablespoons sesame seeds
4 tablespoons black sesame seeds

Equipment Needed

Saucepan
Blender
Large saute pan
Baking sheet (optional)

Instructions

Begin by preparing the sauce. In a saucepan over medium heat, combine the minced shallots, minced fresh gingerroot, and lemon juice with the sake (or dry white wine).
Cook the mixture until the liquid has reduced to approximately 2 tablespoons. This concentration of flavors is key to a vibrant sauce.
Stir in the heavy cream and bring the mixture to a light boil.
Reduce the cream by half. Be vigilant during this step; do not allow it to burn.
Stir in the soy sauce.
Carefully transfer the mixture to a blender.
Blend on low speed while slowly adding the chilled butter, a few cubes at a time. This gradual emulsification is essential for a smooth and creamy sauce. Continue until all of the butter is incorporated.
Roughly chop or tear the shiso leaves. Add them to the sauce and blend for about 10 more seconds. The shiso adds a unique, herbaceous note.
Season the sauce to taste with kosher salt and white pepper. Keep the sauce warm while you prepare the fish.
Preheat your oven to 425 degrees F (220 degrees C).
Heat the canola oil in a large saute pan over high heat.
Season both sides of the mahi mahi fillets with kosher salt and white pepper.
In a plate or flat dish, mix together the white sesame seeds and black sesame seeds.
Press the TOP side only of each fillet into the sesame seed mixture. Press firmly to ensure the seeds adhere well. Make sure that the crusted sides are evenly coated with the seeds.
When the oil is smoking hot, carefully add the fish, sesame seed side down, to the pan. Be cautious of oil splatters.
Pan sear the fish for about 30 to 45 seconds per side. The goal is to create a beautiful, golden-brown crust.
Place the pan into the preheated oven, or transfer the fish to a baking sheet, and cook in the oven for about 5 to 6 minutes. The cooking time will depend on the thickness of your fillets.

Serve the sesame-crusted mahi mahi sesame crust side up, drizzled generously with the ginger butter sauce.

Expert Tips & Tricks

To prevent the butter sauce from breaking, ensure the butter is very cold and add it gradually while the blender is running on low. If the sauce does separate, try adding a tablespoon of ice water while blending to help it re-emulsify.
Don’t overcrowd the pan when searing the fish. This can lower the oil temperature and result in uneven browning. Cook the fillets in batches if necessary.
For a deeper sesame flavor, lightly toast the sesame seeds in a dry pan before using them to crust the fish. Be careful not to burn them!
If you can’t find shiso, you can substitute with fresh mint and basil. Use a combination of the two, and adjust the amount to your taste.

Serving & Storage Suggestions

Serve the sesame-crusted mahi mahi immediately for the best flavor and texture. The crispy sesame crust is most enjoyable when freshly cooked. Garnish with extra shiso leaves or a sprinkle of sesame seeds for an elegant presentation.

Leftover mahi mahi can be stored in an airtight container in the refrigerator for up to 2 days. Reheat gently in a pan over low heat or in a 300°F oven to prevent drying out. The sauce can also be stored separately in the refrigerator for up to 3 days. Reheat gently in a saucepan over low heat, whisking occasionally. Freezing is not recommended as it can affect the texture of both the fish and the sauce.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	499.7 kcal	N/A
Calories from Fat	310 g	62%
Total Fat	34.5 g	53%
Saturated Fat	15.8 g	78%
Cholesterol	191.9 mg	63%
Sodium	665 mg	27%
Total Carbohydrate	7.3 g	2%
Dietary Fiber	1.5 g	6%
Sugars	0.4 g	1%
Protein	35.5 g	70%

Variations & Substitutions

Gluten-Free: Ensure the soy sauce is gluten-free. Tamari is a great substitute.
Dairy-Free: Substitute the heavy cream with coconut cream for a richer, dairy-free sauce. Use a dairy-free butter alternative.
Spicy Kick: Add a pinch of red pepper flakes to the sesame seed mixture or a dash of sriracha to the butter sauce for a spicy twist.
Herb Variations: Experiment with other fresh herbs like cilantro or Thai basil in the sauce.
Fish Substitutions: If you can’t find mahi mahi, consider using swordfish, tuna, or Chilean sea bass.

FAQs (Frequently Asked Questions)

Q: Can I make the sauce ahead of time?
A: Yes, you can prepare the sauce a day or two in advance. Store it in an airtight container in the refrigerator and reheat gently before serving.

Q: How do I know when the mahi mahi is cooked through?
A: The fish is cooked when it flakes easily with a fork and the internal temperature reaches 145°F (63°C).

Q: What if I don’t have sake?
A: Dry white wine is a perfectly acceptable substitute for sake in this recipe.

Q: Can I grill the mahi mahi instead of pan-searing?
A: Yes, grilling is a great alternative. Be sure to oil the grill grates well and cook the fish over medium-high heat for about 4-5 minutes per side.

Q: The sesame seeds keep falling off. What am I doing wrong?
A: Ensure the fish is dry before pressing it into the sesame seeds. Press the seeds firmly onto the fish to help them adhere. You can also lightly brush the fish with egg white before pressing on the seeds to help them stick even better.

Final Thoughts

This Sesame Crusted Mahi Mahi with Soy Shiso Ginger Butter Sauce is a dish that elevates a simple fish to something truly special. The combination of textures and flavors – the crisp sesame crust, the flaky fish, and the rich, aromatic sauce – is an absolute delight. Don’t be intimidated by the seemingly long list of ingredients; each one plays a crucial role in creating a harmonious and unforgettable culinary experience. I encourage you to give this recipe a try and share your own creations and feedback! It pairs beautifully with steamed rice and a vibrant green salad. Enjoy!

Sesame Crusted Mahi Mahi With Soy Shiso Ginger Butter Sauce Recipe