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Ramekin of cilantro sauce with fish tacos in the background

Cilantro Sauce for Fish Tacos

This bright, cilantro-forward sauce is the perfect complement to fish tacos! The cumin adds richness and depth, while the thyme enhances the herbal notes and gives it something unique.
Prep Time 5 mins
Cook Time 5 mins
Total Time 10 mins
Servings 6 servings
Calories 48 kcal


  • 1 cup moderately packed cilantro (thick stems cut off)
  • ½ teaspoon cumin
  • ½ cup sour cream
  • 5 cloves garlic
  • 1 tablespoon picked thyme leaves
  • 3 green onions
  • 4 tablespoons lime juice
  • pinch of salt
  • piece of chili pepper (optional)


  • Trim the roots and upper loose leaves off the green onions, then cut into 1” pieces. Peel the garlic.
  • Put everything in a blender or food processor and blend until smooth. If necessary, add a bit of water to loosen the sauce and allow it to blend.
  • Taste and add more cumin, salt, or lime juice if necessary.