These Big Island Fish Tacos are destined to become a household favorite. Bright lime, creamy avocado, crisp cabbage and onion, and a cool, tangy sauce combine with flaky white fish to deliver bold, balanced flavor in every bite. They’re simple to prepare and perfect for a quick weeknight dinner or a casual gathering.

In Hawaii this dish often features local fish such as opakapaka, but any firm, white, flaky fish like cod works exceptionally well. You can warm the tortillas briefly in a pan for a soft, pliable shell or shallow-fry them for a slightly crisp edge. Either way, the tacos come together quickly and deliver satisfying texture and taste.

Below is a clear, step-by-step recipe including prep and cook times, ingredient lists, and simple instructions so you can make these tacos with confidence.

Recipe Details

• Prep Time: 15 minutes
• Cook Time: 10 minutes
• Total Time: 25 minutes
• Servings: About 18 tacos (serves 6, 3 tacos each)
• Course: Main Course
• Cuisine: American / Hawaiian-inspired

Ingredients

For the Garnish

• 3 limes, cut into 6 wedges each
• 3 avocados, cut into cubes
• 1/8 head red cabbage, sliced very thin
• 1 white onion, sliced very thin

For the Sauce

• 3 tablespoons fresh lime juice (about 1 lime)
• 8 ounces sour cream (1 cup)
• 1/4 cup mayonnaise (preferably a quality brand)
• 1/8 teaspoon salt
• 1/8 teaspoon cayenne pepper (adjust to taste)

For the Tacos

• 18 corn tortillas (6-inch size)
• 2 pounds skinless, white flaky fish (such as cod), cut into portions
• Cooking oil for warming or shallow-frying tortillas and for the pan

Instructions

1. Prep the Garnishes

1. Cut the limes into wedges. Cube the avocados and set aside.
2. Slice the onion and cabbage into very thin strips. Arrange these items on a serving platter so guests can assemble their own tacos if desired.

2. Make the Sauce

1. In a medium bowl whisk together lime juice, sour cream, mayonnaise, salt, and cayenne until smooth. Taste and adjust seasoning or heat as you prefer. Refrigerate until ready to serve.

3. Prepare the Tortillas

1. To warm tortillas: place several shells in a large skillet over medium-high heat for 1–2 minutes per side, until lightly browned in spots.
2. To crisp tortillas: pour about 3/4 cup oil into a small frying pan (enough to cover the bottom about 1/4 inch) and fry each tortilla briefly until golden, then drain on paper towels. Both methods work well—choose based on texture preference.

4. Cook the Fish

1. Pat fish dry and season lightly with salt, pepper, and a small pinch of cayenne.
2. Coat a grill pan or skillet with oil and heat over medium-high until hot. Place the fish in the pan and cook without moving for about 3 minutes, until the underside is golden.
3. Flip the fish and cook until opaque throughout, another 2–3 minutes depending on thickness. If the fillet breaks apart while flipping, that’s fine—transfer to a plate and break into roughly 1/2-inch pieces.

5. Assemble and Serve

1. Divide the cooked fish among the warmed tortillas.
2. Top each taco with avocado cubes, a bit of cabbage and onion, and drizzle with the prepared sauce.
3. Serve immediately with lime wedges for squeezing over the tacos.

Tips and Variations

• Substitute mahi-mahi, halibut, or tilapia if cod is not available.
• For a lighter sauce, swap half the sour cream for plain Greek yogurt.
• Add fresh cilantro or a quick mango salsa for a fruit-forward contrast.
• To make larger batches for a crowd, scale ingredients linearly and keep sauce chilled until serving.