Key Lime and Chile Ceviche Sauce with Soy Oil

Introduction

This Key Lime and Chile Ceviche Sauce combines two distinct components—a bracing leche de tigre infused with ají amarillo and ají limo, and a silky chile-spiked mayonnaise bound with soy oil—to create a bright, complex condiment that works as a ceviche base, seafood dipping sauce, or bold finishing element for raw fish or cooked proteins. The 15-minute chill allows the aromatics and spices to fully integrate into the lime juice, while the emulsion technique ensures the sauce stays creamy rather than breaking. Expect bright heat, underlying umami from the hondashi, and a texture that’s simultaneously sharp and luxurious.

Recipe Details

• Prep Time: 25 minutes
• Cook Time: 0 minutes
• Total Time: 40 minutes (includes 15-minute chilling time)
• Servings: About 6

Ingredients

• 100 ml key lime juice (from 8-10 limes)
• 20 g sea salt
• 20 g red onions
• 20 g ají amarillo chile
• 10 g ají limo chile
• 10 g garlic
• 5 g cilantro leaves
• 5 g hondashi (Japanese dehydrated broth)
• 5 g black pepper powder
• 5 g togarashi pepper powder
• 375 ml soybean oil
• 2 pasteurized eggs

Instructions

Leche de tigre

1. Pour the lime juice into a bowl.
2. Add the salt and test the flavor. It should be neither too salty nor too acidic. If needed, rectify by adding more salt or lime juice to find the right balance.
3. Add the onions, chiles, garlic, cilantro, hondashi, black pepper, and togarashi.
4. Cover with plastic wrap and reserve in the fridge for at least 15 minutes, so the flavors from the vegetables and spices can integrate into the lime juice.

Mayonnaise

1. Crack the eggs into a blender, and start blending at low speed.
2. While running the blender, very gradually start adding 250 ml of the oil until the mixture thickens to a mayonnaise consistency. Use more or less oil as needed.
3. Pause the blender, pour your leche de tigre into the mix, and start blending again.
4. Gradually stream in the remaining 125 ml oil until the mix thickens again.
5. Turn off the blender and taste for salt. If needed, add a little more salt, and blend again until it suits your taste.

Variations

Chile heat adjustment: If you find the sauce too hot, reduce the ají limo to 5 g or omit it entirely, letting the milder ají amarillo carry the chile character without overwhelming heat.

Acid preference: Swap key lime juice for regular Persian lime or lemon juice in a 1:1 ratio; lemon will push the flavor profile slightly sharper and less tropical, while regular lime softens the brightness marginally.

Oil type: Use neutral avocado oil or light olive oil instead of soybean oil if you prefer a different mouthfeel; soybean oil is neutral and light, while avocado oil adds subtle richness.

Thinner consistency: If you want a pourable sauce rather than a thick mayonnaise, add 50–100 ml of fish stock or seafood broth after the final emulsion step and pulse gently to combine.

Garlic intensity: Double the garlic to 20 g for a punchy, more assertive sauce, or halve it to 5 g if you prefer the umami and spice to take the lead.

Tips for Success

Taste the leche de tigre first: Before blending in the mayonnaise, make sure the lime mixture is perfectly seasoned—salty and bright but not harsh. This is your foundation; correcting it later is harder once the oil is emulsified.

Add oil slowly at the start: The initial 250 ml of oil must go in very gradually at low blender speed, or the emulsion will break. Once the mixture thickens noticeably, you can be slightly more generous with your pour rate, but patience here prevents a split sauce.

Use pasteurized eggs if serving raw: Since this sauce often accompanies raw fish, pasteurized eggs ensure food safety without compromising the silky texture of the mayonnaise.

Don’t over-blend the finished sauce: Once you’ve reached the final consistency, stop blending. Over-working the emulsion after all the oil is incorporated can destabilize it and make it look grainy or separated.

Chill the leche de tigre fully: The 15 minutes isn’t negotiable—it allows the salt, chiles, and aromatics to properly distribute through the lime juice so the flavor is cohesive, not raw or one-dimensional.

Storage and Reheating

FAQ

Can I make this by hand instead of using a blender?

Yes, but it requires patience and a strong arm. Whisk the eggs in a bowl, then add the oil one teaspoon at a time while whisking constantly until the emulsion thickens, then add it in a thin stream. This method takes 10–15 minutes and demands steady, vigorous whisking to prevent the mixture from breaking.

What should I serve this with?

Use it as a base for ceviche with diced raw fish, as a dipping sauce for grilled shrimp or scallops, drizzled over cooked white fish, or spooned over raw oysters. Its bright acid and chile heat complement any seafood preparation.

How do I fix a broken or grainy mayonnaise?

Start fresh with a clean bowl and one egg yolk. Whisk it by hand or at very low blender speed, then slowly incorporate the broken sauce as if it were oil. Once it thickens and emulsifies, you can resume normal speed and continue building the sauce.

Can I reduce the salt in the leche de tigre?

You can, but taste as you go. The salt isn’t just for flavor—it begins to cure the vegetables and spices, pulling out their oils and flavors into the lime juice. Too little salt results in a thin, flat-tasting base for the mayonnaise.