Peruvian Blackened Mahi Mahi and Aji Amarillo Potatoes
Peruvian Blackened Mahi Mahi with Aji Amarillo mashed potatoes, fresh pico de gallo, and creamy citrus pepper mojo for a bright, flavorful Peruvian-style meal.
🔗 Peruvian Blackened Mahi Mahi and Aji Amarillo Potatoes Recipe Links
👩🍳My New Obsession With Peruvian Food
I can’t tell you how many times lately I’ve told my husband we should move to Peru just so I can eat the food every day. I’m completely hooked on the layers of flavor. Peruvian cooking brings together citrus and spice, gentle heat from the peppers and sauces so rich they practically melt into every bite. The balance is unreal, bright yet comforting and full of depth.
I first fell in love with Peruvian food in Springfield, Missouri, when we wandered into a restaurant called Cafe Cusco. We didn’t know what to expect, but the second we stepped in, the air was filled with the scent of roasted peppers, garlic and citrus. The space was cozy with booths circling a central bar and the staff made us feel instantly welcome.
We started with a few appetizers. Yucca wasn’t my favorite since it felt a little dry, but the dipping sauces made up for it with so much flavor. Then came the Margarita Cubano, and it might be the best drink I’ve ever had. Made with tequila, lime and cinnamon, it was smooth and refreshing with just the right warmth from the spice.
When the main course arrived, I was officially in love with Peruvian food. I ordered blackened fish served over Aji Amarillo mashed potatoes and it was unforgettable. The fish had a smoky crust, the potatoes were creamy and full of subtle chili heat, and the citrus sauce tied everything together perfectly. If you ever find yourself in Springfield, make the trip to Cafe Cusco. You’ll thank me later.
When I got home, I couldn’t stop thinking about that meal. I started recreating the flavors in my kitchen until this recipe came to life. My version of Peruvian Blackened Mahi Mahi with Aji Amarillo Mashed Potatoes is full of everything I love about the cuisine. It’s bright, bold and bursting with layers of citrus, spice, and creaminess. Every bite wakes up your taste buds and I hope you try it and tell me what you think because I am genuinely so excited about this one.

Citrus Pepper Mojo Aji Amarillo Mashed Potatoes Blackened Mahi Mahi Pico De Gallo
🛒 Peruvian Blackened Mahi Mahi and Aji Amarillo Potatoes Ingredients
🥣 Step By Step: Peruvian Blackened Mahi Mahi and Aji Amarillo Potatoes
Start with the creamy citrus pepper mojo. Mash the garlic with a pinch of salt until smooth, then blend it with mayonnaise, sour orange juice, onion powder, garlic powder, oregano and all three citrus zests. The combination of lime, lemon, and orange creates that signature bright, tropical flavor found throughout Peruvian cooking.
The sauce should be thick enough to drizzle but not heavy. If it feels too dense, loosen it with a small splash of citrus juice until it runs off a spoon in a slow stream. Let it rest in the refrigerator while you work. The flavors develop more depth as the garlic mellows and the citrus infuses the mayonnaise.
Next, prepare the Aji Amarillo mashed potatoes. Peruvian cuisine often builds layers of flavor through color and spice, and these potatoes show exactly why. Boil the cubed Yukon Gold potatoes in salted water until tender, then drain completely so they don’t turn gummy. In a small saucepan, warm the milk with butter, olive oil, garlic paste, turmeric and Aji Amarillo paste. This mixture gives the potatoes their creamy texture and golden hue.
Slowly fold the warm milk mixture into the potatoes as you mash, stopping when they turn smooth and fluffy. If using Aji Amarillo seasoning instead of paste, stir in a little lime and orange juice at the end to keep the flavor bright. Keep the potatoes covered and warm while you finish the rest of the meal, since warm potatoes stay smooth and silky.
While the potatoes cook, make the pico de gallo. Combine diced tomatoes, onion, jalapeño (remove seeds and placenta or it gets super spicy), fresh cilantro and fresh squeezed lime juice in a small bowl. Sprinkle with salt and stir gently. Let it sit for ten minutes so the tomatoes release their juices and the flavors combine naturally. The freshness of this mix helps balance the richness of the mojo and the spice from the blackened fish.
For the mahi mahi, pat each fillet dry with paper towels. This step is important for achieving a crisp sear. Rub the fish with olive oil, then coat generously with blackened seasoning. Mahi mahi’s firm texture and mild flavor make it perfect for high-heat searing, which is common in coastal Peruvian dishes where fresh fish meets smoky spices.
Heat a cast iron skillet over medium-high until it’s hot enough that a drop of oil shimmers right away. Sear the fillets for three to four minutes per side, letting them form a dark, flavorful crust. Avoid moving the fish too soon so the seasoning adheres properly. The fish should flake easily with a fork when done, while still moist inside.
To assemble, spoon a generous layer of Aji Amarillo mashed potatoes onto each plate. Place a mahi mahi fillet on top, then add a spoonful of pico de gallo over the fish. Finish with a drizzle of the creamy citrus pepper mojo and a fresh squeeze of lime juice.
Each bite brings the balance that defines Peruvian food: warmth from the chili, brightness from the citrus and richness from the creamy sauces. If you have leftovers, the potatoes reheat well with a splash of milk and the mojo makes an excellent dip for vegetables or grilled shrimp the next day.
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Peruvian Blackened Mahi Mahi and Aji Amarillo Potatoes
Ingredients
For the Blackened Mahi Mahi
- 24 ounces mahi mahi fillets (about 3-4 filets)
- 2 tablespoons olive oil
- 2-3 tablespoons blackened seasoning (I like to coat them)
- 1 tablespoon lime wedges (1 lime worth)
For the Aji Amarillo Mashed Potatoes
- 1½ pounds Yukon Gold potatoes (peeled and cubed)
- 1 tablespoon garlic paste (or finely grated garlic)
- 1 tablespoon olive oil
- ¼ teaspoon turmeric
- 1 cup 2% milk
- 4 ounces unsalted butter (cubed)
- 2-3 tablespoons Aji Amarillo paste*
- salt to taste
For the Creamy Citrus Pepper Mojo
- 3-4 cloves of garlic (minced)
- 1 cup mayonnaise
- ½ cup sour orange juice* (or substitute below)
- ½ teaspoon onion powder
- ½ teaspoon garlic powder
- ½ teaspoon dried oregano
- zest of ½ lemon
- zest of one lime
- zest of one orange
- salt and black pepper to taste
For the Pico de Gallo
- 3 roma tomatoes (diced)
- ½ white onion (finely diced)
- 1 jalapeño (finely chopped, seeds removed)
- ¼ cup fresh cilantro (chopped)
- juice of 1 lime
- salt to taste
Instructions
- Peel 3-4 cloves of garlic. In a mortar and pestle, mash the garlic with ¼ teaspoon salt until smooth.In a blender (or bowl if you want to whisk it), combine the garlic paste, 1 cup mayonnaise, ½ cup sour orange juice*, ½ teaspoon onion powder, ½ teaspoon garlic powder, ½ teaspoon dried oregano, zest of ½ lemon, zest of one lime zest of one orange and salt and black pepper to taste. Blend until thick and creamy.Taste and adjust salt to balance the flavors. It should be garlicky, tangy, and bright. Refrigerate until ready to use.
- Place 1½ pounds Yukon Gold potatoes in a pot, cover with cold water, and add a generous pinch of salt. Bring to a boil, then simmer until tender, about 15 minutes. Drain and return potatoes to the pot.
- In a saucepan, warm 1 cup 2% milk, 4 ounces unsalted butter, 2-3 tablespoons Aji Amarillo paste*, 1 tablespoon garlic paste, 1 tablespoon olive oil, ¼ teaspoon turmeric and salt to taste until butter is melted and ingredients are smooth.
- Mash the potatoes, then slowly fold in the hot cream mixture until fluffy and vibrant yellow. Adjust salt to taste. Keep warm.
- While the potatoes are boiling, combine 3 roma tomatoes, ½ white onion, 1 jalapeño, ¼ cup fresh cilantro and juice of 1 lime in a small bowl. Season with salt to taste. Stir and refrigerate 10 minutes to let flavors meld.
- Pat 24 ounces mahi mahi fillets, portioned into serving size sections, dry. Rub fillets with olive oil, then coat both sides generously with blackened seasoning. Heat a cast-iron skillet over medium-high. Sear fillets 3–4 minutes per side until blackened outside and flaky inside.
- Spoon a bed of aji amarillo mashed potatoes onto plates. Place a mahi mahi fillet on top. Add a spoonful of pico de gallo over the fish. Drizzle generously with the creamy citrus pepper mojo. Serve immediately with lime wedges.
Notes
Substitutions
Storage
Nutrition
FAQs
Can I use another type of fish instead of mahi mahi?
Yes. Halibut, snapper, or grouper also work well because they hold their shape and absorb the blackened seasoning beautifully. Just adjust cooking time based on thickness.
What does Aji Amarillo taste like?
It’s mildly spicy with a fruity, almost floral flavor that gives Peruvian dishes their signature warmth and color. It’s not hot like jalapeño, more like a gentle glow of heat.
Why is sour orange juice used in Peruvian sauces?
Sour orange adds balanced acidity that’s softer than lime but brighter than vinegar. It gives the mojo its tangy, tropical note without overwhelming the garlic.
Why is my fish sticking to the skillet?
The pan probably wasn’t hot enough. Wait until the oil shimmers before adding the fish, and avoid moving it too soon. A well-seasoned cast iron pan helps create that signature crust.
Serving Suggestions
At Café Cusco in Springfield, they serve unforgettable Cuban Margaritas made with tequila, fresh lime, and a touch of cinnamon. The warmth of the spice against the citrus is addictive and pairs perfectly with the blackened mahi mahi and creamy mojo sauce. I’m working on a post to recreate that cocktail at home because it has such a unique mix of bright, smoky, and lightly spiced flavors that make it perfect for Peruvian-style meals.
Keep small bites like cancha, which is toasted corn, and chifles, thin plantain chips, on the table for snacking. They’re simple but give that salty crunch that ties everything together. For drinks, the Cuban Margarita is the star, but a traditional Pisco Sour or a light white wine like Albariño also pairs beautifully with the citrus and spice running through the meal.

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