Swordfish with Miso Mayonnaise: An Umami Seafood Delight

The first time I tasted this combination of flavors, I was skeptical. Fish and mayonnaise? It seemed almost sacrilegious. But one bite of the tender swordfish, glazed with the savory-sweet miso mayonnaise, and I was a convert. It was a revelation – the rich, fatty fish perfectly complemented by the umami depth of the miso and the creamy tang of the mayonnaise. It’s become a go-to weeknight meal in my house, a guaranteed crowd-pleaser that even the most discerning palates appreciate.

Recipe Overview

• Prep Time: 5 minutes
• Cook Time: 15 minutes
• Total Time: 20 minutes
• Servings: 2
• Dietary Type: Pescatarian

Ingredients

• 2 swordfish steaks
• ½ cup mayonnaise
• 2-3 tablespoons shiro miso (white)
• 1 tablespoon sesame oil
• 2-3 tablespoons sugar
• Soy sauce, for serving
• Lemon juice, for serving

Equipment Needed

• Broiler
• Whisk
• Bowl

Instructions

1. Preheat your broiler to high. Place the swordfish steaks on a broiler-safe pan.
2. While the broiler heats and the fish prepares to cook, prepare the miso mayonnaise. In a bowl, combine the mayonnaise, shiro miso, sesame oil, and sugar.
3. Using a whisk, mix the ingredients thoroughly until the sauce is smooth and homogenous. Taste and adjust the amount of miso or sugar according to your preference. A good starting point is 2 tablespoons each, but feel free to experiment!
4. Broil the swordfish steaks. The exact cooking time will depend on the thickness of your steaks, but typically, they will need about 10-12 minutes.
5. After about 7-8 minutes of broiling (or when the fish is almost cooked through), remove the swordfish from the broiler and generously brush the miso mayonnaise mixture over the top of each steak.
6. Return the swordfish to the broiler for the last 3-4 minutes of cooking time. Watch very carefully to avoid burning the miso mayonnaise. The goal is to achieve a beautiful golden-brown glaze.
7. The swordfish is done when it is opaque and flakes easily with a fork. The internal temperature should reach 145°F (63°C). Be careful not to overcook the fish, or it will become dry.
8. Remove the swordfish steaks from the broiler and let them rest for a couple of minutes before serving.
9. Serve immediately with soy sauce and lemon juice for dipping.

Expert Tips & Tricks

• Don’t Overcook! Swordfish is best when cooked medium. Overcooking will result in dry, tough fish. Use a meat thermometer for accuracy.
• Miso Matters: Shiro miso (white miso) is the mildest and sweetest variety, making it ideal for this recipe. If you only have access to darker miso, use it sparingly and adjust the sugar accordingly.
• Broiler Beware: Keep a close eye on the fish while it’s under the broiler. The high heat can quickly turn a delicious glaze into a burnt mess.
• Even Cooking: For even cooking, use swordfish steaks that are of similar thickness. If one steak is significantly thicker, it will take longer to cook.
• Marinate for more Flavor: You can marinate the swordfish in sesame oil and ginger for 20 mins before cooking.

Serving & Storage Suggestions

Serve the swordfish with miso mayonnaise immediately while it’s hot and the glaze is glistening. It pairs beautifully with steamed rice, grilled asparagus, or a fresh salad. The acidity of the lemon juice cuts through the richness of the fish, while the soy sauce adds another layer of umami.

Leftover swordfish can be stored in an airtight container in the refrigerator for up to 2 days. To reheat, gently warm it in a low oven (around 275°F or 135°C) or in a skillet over low heat. Be careful not to overheat it, as it can become dry. Microwaving is not recommended, as it can make the fish rubbery.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	304.7 kcal	N/A
Calories from Fat	142 g	47%
Total Fat	15.8 g	24%
Saturated Fat	3.1 g	15%
Cholesterol	89.8 mg	29%
Sodium	110.3 mg	4%
Total Carbohydrate	12.6 g	4%
Dietary Fiber	0 g	0%
Sugars	12.6 g	50%
Protein	26.7 g	53%

Note: Nutritional information is an estimate and may vary based on specific ingredients and preparation methods.

Variations & Substitutions

• Other Fish: While this recipe is fantastic with swordfish, you can also use it with other firm, meaty fish like tuna, mahi-mahi, or salmon. Adjust the cooking time as needed.
• Spicy Kick: Add a pinch of red pepper flakes to the miso mayonnaise for a touch of heat.
• Garlic Infusion: Mince a clove of garlic and add it to the miso mayonnaise for a more pungent flavor.
• Ginger Zing: Grate a small piece of fresh ginger and mix it into the miso mayonnaise for a warm, aromatic note.
• Honey Instead of Sugar: Substitute honey for sugar in the miso mayonnaise for a slightly different sweetness profile.
• Gluten-Free: Ensure your soy sauce is gluten-free by using tamari.

FAQs (Frequently Asked Questions)

Q: Can I grill the swordfish instead of broiling it?
A: Absolutely! Grilling will give the fish a smoky flavor. Just be sure to preheat your grill to medium-high heat and oil the grates to prevent sticking. Watch the fish carefully and adjust the cooking time as needed.

Q: Can I make the miso mayonnaise ahead of time?
A: Yes, you can prepare the miso mayonnaise up to 24 hours in advance. Store it in an airtight container in the refrigerator. Give it a good whisk before using.

Q: I don’t have shiro miso. Can I use another type of miso?
A: While shiro miso is recommended for its mild flavor, you can use other types of miso. Just be aware that darker miso varieties like red miso will have a stronger, saltier flavor. Use them sparingly and adjust the sugar accordingly.

Q: How do I know when the swordfish is done?
A: The swordfish is done when it is opaque and flakes easily with a fork. The internal temperature should reach 145°F (63°C). A meat thermometer is the most accurate way to check for doneness.

Q: Can I use this miso mayonnaise on other things?
A: Definitely! It’s delicious on grilled vegetables, chicken, or even as a dip for crudités.

Final Thoughts

This Swordfish with Miso Mayonnaise is more than just a recipe; it’s an experience. It’s a testament to the power of simple ingredients combined in unexpected ways to create something truly extraordinary. Don’t be afraid to experiment with the flavors and make it your own. I encourage you to give this recipe a try. And if you do, I’d love to hear about it. Share your feedback and any variations you try. Happy cooking!