Select a neutral oil like olive, canola, or sunflower oil as the foundation for infusion.
Use fresh herbs, garlic, chili, citrus peels, or spices like cinnamon and cloves for your desired flavor.
Wash and thoroughly dry fresh ingredients to prevent spoilage; crush herbs or chop spices for better infusion.
Place the ingredients in a clean glass jar or bottle and pour the oil over them, fully submerging the flavorings.
For stronger flavors, gently heat the oil with the ingredients on low for 5–10 minutes, then cool.
Let the oil steep in a cool, dark place for 1–2 weeks, shaking occasionally to enhance infusion.
Strain out the solids using a fine sieve or cheesecloth, and store your infused oil in a sealed container. Use within 2–3 months.