Zapotec Chili Oil Dressing
A smoky, fruity chili oil infused with garlic, oregano, and lime juice. This Oaxacan-inspired dressing captures the earthy warmth of pasilla Oaxaqueña chilies balanced with brightness from citrus. Drizzle over grilled vegetables, seafood, eggs, or soups, or use as a finishing oil for quesadillas and tlayudas.
- Prep
- 10 min
- Cook
- 5 min
- Wait
- 2 hr
- Total
- 2 hr 15 min
- Makes
- ¾ cup (180 ml)
Steps
Before you start
- Remove stems and seeds from the pasilla Oaxaqueña chilies; rinse briefly if dusty
- Measure olive oil and have it at room temperature
- Have a clean glass jar or bottle ready for storage
Toast the chilies
- Place a small 8-inch skillet over medium heat for 1 minute until warm.
- Add the torn pasilla Oaxaqueña chili pieces and toast for 2–3 minutes, stirring frequently, until fragrant and slightly darkened.
- The chilies should smell smoky and earthy but not burned.
- Transfer to a small bowl and set aside.
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Ready when: Chilies are fragrant and slightly darker, releasing their oils
Tip: Toast over medium heat to awaken flavor without scorching; burned chilies taste bitter.
Infuse the oil
- Pour the room-temperature olive oil into a clean glass jar.
- Add the toasted chili pieces, sliced garlic, Mexican oregano, and sea salt.
- Stir well to combine all ingredients evenly throughout the oil.
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Ready when: All ingredients are submerged and evenly distributed in the oil
Tip: Using room-temperature oil ensures the infusion extracts maximum flavor without cooking the garlic.
Rest and infuse
- Cover the jar loosely (or use a cork/cap left partially open) and set at room temperature away from direct sunlight for 2 hours.
- During this time, the oil will gradually absorb the smoky flavor of the chilies and the pungency of the garlic.
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Ready when: Oil has taken on a warm amber-reddish hue with visible chili specks and garlic pieces
Tip: Keep away from direct sunlight to preserve the oil's color and prevent oxidation.
Strain and finish
- Pour the infused oil through a fine-mesh strainer into a clean jar or bottle, pressing gently on the solids to extract all flavorful oil.
- Discard the chili pieces, garlic, and oregano solids.
- Add the fresh lime juice and stir to combine.
- Taste and adjust salt if needed.
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Ready when: Oil is clear and golden with a thin layer of lime juice at the bottom, no visible solids remain
Tip: Gently press solids to extract flavor but avoid breaking down the chili pieces into the oil; a clear oil looks more appetizing.
Good to know
Tips
- Serve this dressing warm by gently heating it in a small pot over low heat for 1–2 minutes just before serving; a warm chili oil deepens the flavors and coats the palate.
- Drizzle over grilled fish, roasted cauliflower, creamy soups, or cooked black beans. It's also excellent as a finishing oil for tlayudas, quesadillas, or grilled corn.
- If the oil becomes cloudy or develops an off smell, discard it—this indicates the infusion has gone rancid or spoiled.
- For a more textured dressing, leave some of the garlic and chili pieces in the oil rather than straining completely; it will be spicier and chunkier.
Make ahead
Prepare up to 1 week ahead; the flavor actually deepens over 2–3 days. Store in an airtight jar or bottle in a cool, dark place.
Storage & reheating
Room temperature (cool, dark cupboard): up to 2 weeks. Refrigerator: up to 4 weeks. Flavor peaks within the first week. No freezing needed. Stir before each use as the lime juice and oil may separate slightly.
Substitutions
- pasilla Oaxaqueña chilies, stems and seeds removed → ancho chilies or pasilla negra chilies. These offer similar smoky, fruity notes, though ancho will be slightly less deep and pasilla negra will be earthier.
- dried Mexican oregano → fresh Mexican oregano (use ¾ teaspoon / 1.5 g) or marjoram. Fresh oregano gives a brighter, more herbaceous note; marjoram is milder.
- extra virgin olive oil → avocado oil or a neutral oil (sunflower, grapeseed). Use if you prefer a lighter, more neutral base that lets the chili flavor shine, though you'll lose the fruitiness of olive oil.
- fresh lime juice → fresh lemon juice or Seville orange juice (naranja agria). Lemon is brighter and more acidic; naranja agria is traditional in Oaxaca and adds citrus warmth.
