Infusing Olive Oil
Oil acts as a solvent, pulling volatile compounds from herbs, spices, and aromatics. Once captured, this oil becomes a base for finishing dishes, vinaigrettes, or sautéing, carrying a concentrated layer of flavor that simple raw oil lacks.
Control the heat to preserve the oil's integrity.
Avoid high heat, which breaks down the structure of olive oil and ruins delicate flavors. Use fresh, dry herbs to prevent water from entering the oil, as moisture creates a breeding ground for bacteria.
- Heavy-bottomed saucepan
- Fine-mesh sieve
- Cheesecloth
- Sterilized glass bottles
- Kitchen thermometer
What goes in.
- 2 cupsextra virgin olive oil
- 1/2 cupfresh rosemary or thyme sprigs, patted dry
- 4 clovesgarlic, peeled and lightly crushed
- 1 tspblack peppercorns, toasted
Low and Slow Extraction
Keep the oil temperature between 160°F and 180°F. If the oil begins to smoke or the garlic browns rapidly, remove the pan from the heat immediately to avoid a bitter, scorched flavor profile.
The method.
Prep the aromatics
Ensure your herbs are completely dry. Any water clinging to the leaves will cause the oil to splatter and shorten its shelf life.
Combine
Place the oil and aromatics into a cold, heavy-bottomed saucepan.
Heat gently
Bring the oil to 160°F over very low heat. Hold this temperature for 20 minutes, allowing the aromatics to soften and the scent to permeate the oil.
Cool and strain
Remove from heat and let it steep until the oil returns to room temperature. Line a sieve with cheesecloth and pour the oil through, discarding the solids.
Bottle
Transfer to a clean, airtight glass bottle. Store in a cool, dark place.
Other turns to take.
Chili Oil
Add dried red chili flakes or whole dried bird's eye chilies to the oil during the heating process for a sharp, lingering heat.
Citrus Peel
Add wide strips of lemon or orange zest, ensuring no bitter white pith remains, for a bright, aromatic oil suited for fish or salads.
When it doesn't go to plan.
Always use a fresh, high-quality olive oil, as the infusion will only be as good as the starting base.
If you notice any bubbles forming around the herbs while steeping, your heat is likely too high; adjust down.
For the most vibrant color, strain the oil immediately after it cools to room temperature.
The ones that keep coming up.
How long does infused oil last?
When kept in a clean, airtight container away from light, it stays fresh for about two weeks. If it develops an off-smell, discard it immediately.
Can I leave the herbs in the bottle?
It is safer to remove them. Leaving plant matter in the oil increases the risk of spoilage.
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