Homemade Chili Oil Recipe: Step-by-Step Guide for Authentic Flavor

Chili oil is a simple, transformative condiment that adds heat and depth to so many dishes.

A staple in many Asian kitchens, homemade chili oil is versatile and easy to make. Use it to finish noodles, dumplings, stir-fries, soups, or even avocado toast for an immediate flavor boost.

Making your own allows you to control the heat and aromatics, so you can tailor the oil to your taste. It’s a quick project with a big payoff—once you try it, you’ll find countless ways to use it.

1. Customizable heat and flavor: Choose different chili flakes or add spices like Sichuan peppercorns or cinnamon to create the profile you prefer.
2. Simple pantry ingredients: Most of the components are everyday items, so you can make a batch anytime.
3. Extremely versatile: Drizzle it over dumplings, mix into dressings, or add to soups and noodles for instant brightness and heat.

• Red chili flakes
• Neutral oil (vegetable or peanut oil)
• Paprika
• Salt
• Pepper
• Sugar
• Star anise
• Red onion
• Fresh ginger
• Garlic cloves
• White part of spring onions (green onions)
• Sesame oil

1. Combine the chili flakes, paprika, salt, pepper, and sugar in a heat-proof bowl. Add a tablespoon of oil and mix—this helps protect the spices when hot oil is poured over them.
2. In a skillet or wok over medium heat, warm the neutral oil. Once shimmering, add sliced ginger and fry a few seconds until fragrant.
3. Add crushed garlic, crushed white parts of green onions, and thinly sliced red onion. Stir and fry briefly until the aromatics release their fragrance.
4. Toss in the star anise and continue frying, stirring constantly, until the aromatics are nicely browned but not burnt (about 2–3 minutes).
5. Remove the solids with a slotted spoon and bring the oil’s temperature to about 300°F (150°C).
6. Carefully pour the hot flavored oil slowly over the spice mixture in the heat-proof bowl. Pouring slowly prevents scorching the spices and allows flavors to bloom.
7. Finish with a splash (about 1 teaspoon) of sesame oil for aroma and stir to combine. Let the mixture cool, then transfer to a sterilized jar.

What to use this with?

Chili oil elevates many dishes. Drizzle it over noodles, dumplings, stir-fries, soups, or avocado toast. It also makes a flavorful dip for spring rolls, bread, or roasted vegetables. Try it with dan dan noodles, mapo tofu, or any dish that benefits from a spicy finish.

Does this need to be refrigerated?

Store chili oil in a sterilized, airtight jar. At room temperature it will keep for several weeks in a cool, dark place. Refrigeration will extend shelf life but may cause the oil to solidify—simply bring it back to room temperature before using.

Any additions?

Customize your chili oil with additions that match your flavor goals. Fresh chilies increase heat and color; sesame seeds add texture; Sichuan pepper adds numbing spice; and citrus zest brings brightness.

• Sichuan pepper powder — for a tingling, numbing heat.
• Sesame seeds — for nuttiness and texture.
• Cinnamon stick — for warm, sweet-spicy notes.
• Citrus zest — for a fresh, zesty lift.
• Bay leaves or dried herbs — for subtle herbal depth.
• Toasted garlic — golden, crunchy garlic for extra richness.

Any substitutions?

Substitute ingredients to suit dietary needs or what’s on hand. Use olive or avocado oil instead of vegetable oil, swap chili flake varieties to adjust heat, replace star anise with fennel seeds, or use honey or maple syrup in place of sugar for a different sweetness.

Refrigerator: Store in an airtight container; it will last several weeks. If it solidifies, let it return to room temperature before using.

Freezer: For long-term storage, freeze in a suitable container and thaw in the fridge when needed.

Making chili oil at home is quick and rewarding. With a few pantry staples and a little attention, you’ll have a flavorful, customizable condiment that brightens countless meals.