Quick and Tangy Fish Taco Sauce
A good fish taco sauce ties everything together in a few seconds of whisking. This one is bright, creamy, and just spicy enough to wake up the fish without stealing the spotlight.
You can make it ahead and keep it in the fridge for taco night, or stir it together while the fish rests. Either way, it takes the guesswork out of saucing your tacos.
Why This Sauce Is My Weeknight Go-To
It tastes like the kind of sauce you get at a taco shop, but with ingredients I always have on hand. The sour cream and mayo balance each other out so it is rich without being heavy.
A squeeze of lime cuts right through the creaminess, and the hot sauce adds a clean, vinegary heat. I keep a jar in the fridge most weeks because it works on so much more than just tacos.
Ingredients
- 1/4 cup mayonnaise: use a full-fat version for the creamiest texture
- 1/4 cup sour cream: light sour cream works, but the sauce will be thinner
- 1 tbsp fresh lime juice: about half a lime; bottled is fine in a pinch
- 1 tsp hot sauce: Tabasco or Cholula give the right vinegary kick
- 1/4 tsp garlic powder: granulated garlic is okay, but garlic salt will change the salt level
- 1/8 tsp fine sea salt: adjust after tasting
Variations and Substitutions
- Dairy-free: swap the sour cream for a plain, unsweetened plant-based yogurt and use vegan mayo; the texture stays creamy
- Spice level: double the hot sauce or add a pinch of cayenne for more heat; for a mild sauce, use just a few drops
- Smoky version: replace half the hot sauce with a minced chipotle pepper in adobo and a teaspoon of the adobo sauce
- Extra tang: add 1/2 tsp lime zest along with the juice for a sharper citrus note
If you like this, you will probably want to drizzle it over my cilantro lime slaw.
How to Make Fish Taco Sauce
Step 1: Combine the Sauce Base
Add the 1/4 cup mayonnaise and the 1/4 cup sour cream to a small mixing bowl. Stir them together with a spoon until they are just blended, which takes about 30 seconds.
Step 2: Whisk in the Lime and Seasonings
Pour in the 1 tbsp lime juice, the 1 tsp hot sauce, the 1/4 tsp garlic powder, and the 1/8 tsp salt. Whisk until the sauce is smooth and everything is evenly distributed, about 20 seconds. Taste it on a piece of tortilla chip or a spoon. You can add another pinch of salt or a few more drops of hot sauce right now, then whisk again.
Step 3: Spoon It Over Your Fish Tacos
Transfer the sauce to a small serving bowl or drizzle it straight over the fish. The sauce is ready to use right away, but giving it even 10 minutes in the fridge lets the garlic and lime settle into the cream.
A Few Tips for the Best Sauce
- Let the sauce sit in the fridge for 15 minutes before serving so the flavors can meld, especially if you are making it ahead.
- If you only have garlic salt, cut the sea salt entirely and taste at the end.
- The sauce tightens up when cold, so let it sit at room temperature for a few minutes if you made it in advance or thin it with a few drops of water.
- This recipe doubles or triples without any changes to the method. Use a whisk for larger batches to keep it smooth.
Scale it easily for a crowd:
| Batch | Mayonnaise | Sour Cream | Lime Juice | Hot Sauce |
|---|---|---|---|---|
| 1x | 1/4 cup | 1/4 cup | 1 tbsp | 1 tsp |
| 2x | 1/2 cup | 1/2 cup | 2 tbsp | 2 tsp |
| 3x | 3/4 cup | 3/4 cup | 3 tbsp | 3 tsp |
Storing Leftovers
- Refrigerate: spoon the sauce into an airtight container and keep it in the fridge for up to 5 days.
- Serve cold: the sauce is meant to be served chilled or at cool room temperature, so no reheating is needed.
What to Serve with Fish Taco Sauce
This sauce was built for fish tacos, but it does not need to sit on the sidelines. Spoon it over a bowl of black beans and rice, use it as a dip for sweet potato wedges, or toss it with shredded cabbage for an instant slaw. It brings the same bright, cooling element to grilled shrimp tacos or even a simple chicken quesadilla.
Frequently Asked Questions
Can I make this sauce ahead of time?
Yes. The sauce tastes even better after an hour in the fridge, which makes it ideal for meal prep.
What if I do not have sour cream?
You can use plain Greek yogurt, but the sauce will have more tang and less richness. Stir in a teaspoon of water if it seems too thick.
Is this sauce gluten free?
Yes. All the ingredients are naturally gluten free, but check the hot sauce label if you are sensitive.
Can I use this as a salad dressing?
Yes, but you may want to thin it with a teaspoon of water or extra lime juice so it pours more easily.
Fish Taco Sauce Recipe
Ingredients
Method
- Stir the mayonnaise and sour cream together in a small bowl until just combined.
- Add the lime juice, hot sauce, garlic powder, and salt. Whisk until smooth and taste for seasoning.
- Spoon the sauce over fish tacos or serve it on the side.
