Food Edition›Preserve›French›Side›Infusing Herb-Based Oils
1 hr 30 minIntermediate
French · Side

Infusing Herb-Based Oils

Herb-infused oils act as a concentrated bridge between a raw ingredient and a finished plate. When done correctly, the oil takes on the vibrant scent and character of the herb without clouding or spoiling.

Guide byIris·1 hr 30 min·Updated 2026-08-23
Total time
1 hr 30 min
Hands-on
20 min
Difficulty
Intermediate
Before you start

Moisture is the enemy

Any lingering water on your herbs will introduce bacteria, turning a preserve into a safety risk. Herbs must be bone-dry before they touch the oil.

  • Heavy-bottomed saucepan
  • Thermometer
  • Fine-mesh sieve
  • Cheesecloth
  • Sterilized glass bottle
Ingredients

What goes in.

  • 2 cupsNeutral oil like grapeseed or high-quality light olive oil
  • 1 bunchFresh herbs, such as rosemary, thyme, or basil, washed and patted dry
The key technique

Keep it below 160°F

If the oil bubbles or the herbs darken quickly, you are frying, not infusing. Use a thermometer to keep the oil steady between 130°F and 150°F.

Step by step

The method.

  1. Dry the herbs

    Lay the herbs on a lint-free towel for several hours. If you see even a speck of water, keep drying; moisture causes spoilage.

  2. Heat the oil

    Pour the oil into the pan over low heat. Bring it to 140°F, checking with your thermometer.

  3. Steep the herbs

    Drop the herbs into the oil. Remove the pan from the heat immediately. Let it sit for 45 minutes as the oil pulls the aromatics from the leaves.

  4. Strain and store

    Line a sieve with cheesecloth and pour the oil through into a clean bowl, pressing the herbs slightly to extract every drop. Transfer to a sterilized bottle.

Tips & troubleshooting

When it doesn't go to plan.

Tip

Discard the herbs after straining; they will be spent of flavor and texturally unappealing.

Tip

Store in a cool, dark cupboard or the refrigerator to preserve the color and clarity.

Tip

Use a dark glass bottle to prevent light-induced oxidation.

Questions

The ones that keep coming up.

How long does this keep?

If kept in a sterilized, sealed container in the refrigerator, it will maintain quality for up to two weeks.

Can I leave garlic in the oil?

Avoid adding fresh garlic, onion, or ginger, as these increase the risk of harmful bacteria growth significantly compared to dried or woody herbs.

Community kitchens

How real cooks make it.

No one’s shared their version yet. Be the first to put your kitchen on the map.

Your turn

Cook this your way?

Share your version — your steps, your story. We’ll feature it right here.

Add your recipe