A Spoonful of Sunshine: Lemongrass Chilli Oil

Imagine the citrus-bright scent of bruised lemongrass rising from a warm pan, mingling with the slow, caramelized whisper of shallots and garlic. Then, a ripple of heat — dried chilies popping as hot oil meets them — releasing a deep, toasty spice and a crackle that makes your mouth water. The texture is luxuriously glossy, speckled with fragrant, chewy bits: an irresistible contrast to silky noodles, steamed greens, or a simple scoop of rice.

This lemongrass chilli oil tastes like a memory in the making: vibrant, herbaceous, and smoky-sweet, with that punch of fire that keeps you coming back for another bite. It’s the kind of condiment that transforms the everyday — a quick bowl of noodles becomes festival-worthy, toast becomes extraordinary, and a handful of friends gathering for a midweek dinner suddenly feels celebratory.

Perfect for weeknight dinners, weekend meal prep, hostess gifts, or to keep on hand when you want to lift a simple dish into something joyful and memorable.

Dish Snapshot

Prep Time: 10 minutes (active, slicing and prepping)
Cook Time: 20 minutes (gentle infusing)
Total Time: 30 minutes (plus cooling)
Servings: about 16 tablespoons (approx. 16 one-tablespoon servings)
Difficulty Level: Easy — requires patience and attention while infusing; no special equipment

Nutrition Highlights

Estimated nutritional breakdown per 1 tablespoon serving (approximate; based on 16 servings per recipe). Values are calculated using standard ingredient entries from USDA FoodData Central and reflect commonly used neutral oils (canola/sunflower) and dried chilies:

Calories: ~132 kcal
Total fat: ~14 g
- Saturated fat: ~1.1 g
- Monounsaturated fat: ~8 g
- Polyunsaturated fat: ~4 g
Carbohydrates: ~2.4 g
- Fiber: ~0.8 g
- Sugars: ~0.3 g
Protein: ~0.4 g
Sodium: ~70–80 mg (depending on exact salt used)

Notes:

Most calories come from the oil. For authoritative nutrient values for specific oils and ingredients, see USDA FoodData Central; for general guidance on dietary fat and heart-healthy choices, consult resources such as the Mayo Clinic or CDC. These numbers are estimates for informational purposes; adjust based on specific brands and portion sizes.

Why You’ll Love It

Aroma-first delight: The lemongrass lifts the oil from merely spicy to intensely aromatic — every jar opens like a citrus-herb perfume.
Versatility: Use it as a finishing drizzle, a marinade base, or a dipping sauce — it elevates everything from eggs and noodles to roasted vegetables and grilled meats.
Crowd-pleasing and giftable: Make a double batch for potlucks or jar it beautifully as a hostess gift; it feels thoughtful and homemade.
Fast impact: It takes half an hour to make, but the flavor payoff lasts for weeks — a small time investment for endless meal improvements.
Balanced heat: The chilies bring warmth and depth without overpowering; the lemongrass and aromatics create layers that keep the heat interesting.

How to Make Lemongrass Chilli Oil

Ingredients

1 cup neutral oil (canola, sunflower, or vegetable)
3 stalks fresh lemongrass, finely sliced (white and pale green parts)
6 cloves garlic, minced
2 medium shallots, thinly sliced
½ cup dried red chilies, crushed (adjust heat to taste)
1 tablespoon chili flakes
½ teaspoon salt
1 teaspoon sugar
½ teaspoon Sichuan peppercorns (optional — for tongue-tingling aroma)

Optional ingredients and substitutions:

Use avocado oil instead of canola/sunflower for a slightly fruitier note (watch smoke point).
Swap dried chilies for 3–4 tablespoons smoked paprika + 2 tablespoons crushed chili for a smoky, milder version.
Add 1–2 tablespoons toasted sesame oil at the end for a nutty aroma (adds flavor but reduces shelf life slightly).
Omit sugar for a completely savory oil; add a small piece of star anise for a perfume-like twist.

Method & Process

Sterilize your storage jars: wash with hot soapy water, rinse, and place in a low oven (250°F / 120°C) for 10 minutes to dry and sterilize. Set aside to cool.
Prepare aromatics: slice lemongrass thinly, mince garlic, and thinly slice shallots. Crush the dried chilies if they’re whole, or measure flakes.
Set a medium saucepan over medium-low heat. Add the neutral oil and gently warm for a minute to raise temperature.
Add the sliced lemongrass, garlic, and shallots to the pan. Keep the heat low—this is an infusion, not a fry. Cook gently for 15–20 minutes, stirring occasionally, until the aromatics are golden-brown and fragrant but not burnt.
- Tip: If the garlic browns too quickly, lower the heat. Burnt garlic turns bitter.
Meanwhile, in a heatproof bowl combine the crushed dried chilies, chili flakes, salt, sugar, and optional Sichuan peppercorns.
Carefully and slowly pour the hot oil and aromatics over the chili mixture in the bowl. It should sizzle on contact and release a burst of fragrance. Let it sit and infuse for 15 minutes.
Stir well. If you prefer a smoother oil, strain out the solids through a fine-mesh sieve. If you love texture and crunchy bits, leave the solids in.
Transfer the oil (and any solids, if keeping) into a clean, sterilized jar. Seal and let cool to room temperature before refrigerating.
Label with date. Allow the oil to rest for at least 24 hours to let flavors meld before using for best results.

Practical tips:

Keep the heat low to extract flavor slowly; high heat will scorch aromatics and create bitterness.
Always pour oil slowly into dry, heatproof bowls and avoid splashing.
Let the infused oil cool slightly before sealing jars to avoid excessive condensation inside.

Serving Suggestions

Drizzle on steamed rice or a bowl of plain noodles with scallions and soy sauce.
Stir into mayo for a spicy spread or mix with butter for a decadent garlic-lemongrass bread topping.
Spoon over roasted or steamed vegetables, tofu, or grilled seafood.
Use as a dipping oil for crusty bread, dumplings, or spring rolls.
Add a teaspoon to your morning eggs or avocado toast for a fragrant, savory kick.
Presentation tip: Spoon a little of the chili bits over each serving and garnish with fresh cilantro or thin lime zest for color and brightness.

Keeping it Fresh

Room temperature: If jars and utensils are sterile and you live in a cool, dark place, you can keep unopened jars at room temp for up to 7 days. For safety and freshness, refrigerate after opening.
Refrigeration: Store in the refrigerator for up to 3 months. Flavors continue to develop; oil will thicken slightly when cold — bring to room temp before use if you want it pourable.
Freezing: Freezing is not ideal for oil (texture changes), but you can freeze small portions of the chili solids in an airtight container for up to 6 months and reheat with fresh oil when needed.

Chef’s Advice

Pick the right oil: Choose a neutral oil with a high smoke point (canola, refined sunflower, or light olive oil) so you can gently infuse without reaching smoke point.
Control the heat: If you’re sensitive to capsaicin, remove seeds from dried chilies or use milder flakes. Add more for an extra kick.
Layer aromas: Don’t rush the aromatics. Low-and-slow cooking of lemongrass, shallot, and garlic is what creates a fragrant foundation.
Texture vs. sheen: Leaving the solids in gives a “crunch” and rustic look; straining yields a glossy, smooth finishing oil. Consider making two jars — one smooth, one with bits.
Sanitation matters: Always use clean utensils and sterilized jars to reduce contamination and extend shelf life.

Creative Twists

Citrus-Lemongrass Chilli Oil: Add 1 teaspoon of finely grated lime zest to the oil after infusion and a few drops of lime juice for a tangy lift — great on seafood and salads.
Smoky Sesame Sate Oil: Stir in 2 tablespoons toasted sesame oil and 1 tablespoon peanut butter or crushed roasted peanuts for a satay-inspired finishing oil (add as finishing oil, not for long storage).
Milder “Everyday” Version: Use half the amount of dried chilies and add 2 tablespoons sweet paprika for color and much milder heat — perfect for families and kids.
Fermented Kick: Add 1–2 tablespoons fermented chili paste (like sambal oelek or a small amount of fish sauce for non-vegetarian) after infusion for an umami-rich version suitable for marinades and noodle bowls.

Frequently Asked Questions

Q: Can I use other herbs instead of lemongrass?
A: Yes — kaffir lime leaves, lime zest, or even a strip of lemon peel can be used, but lemongrass gives a unique citrus-herb aroma that’s hard to replicate.

Q: Is this recipe vegan and gluten-free?
A: Yes. All ingredients listed are vegan and gluten-free. If you add any soy sauce when serving, choose tamari for gluten-free options.

Q: My garlic browned quickly — is the oil ruined?
A: Slight browning is fine and adds flavor; burnt garlic tastes bitter. If it’s deeply burned and bitter, discard the batch and try again with lower heat.

Q: How can I reduce the heat but keep flavor?
A: Remove some or all chili seeds and use milder dried chilies. Increase the lemongrass and shallots to keep a complex flavor without extra capsaicin.

Q: Can I make this in large batches for gifting?
A: Yes — double or triple the recipe, but store jars in refrigeration and advise recipients to refrigerate and use within 3 months.

Conclusion

Make a jar this weekend and let one spoonful transform simple meals into something memorable — share the results, swap jars with friends, or tuck a beautifully labeled jar into a gift basket. For inspiration and variations rooted in Vietnamese tradition, see this detailed take on Vietnamese Lemongrass and Chilli Oil (aka Chilli Crisp): Vietnamese Lemongrass and Chilli Oil (aka Chilli Crisp). If you’re curious about related lemongrass sate-style sauces and how they’re used with noodles and rice, this resource on Vietnamese Chile Lemongrass Sate Sauce offers useful context and serving ideas: Vietnamese Chile Lemongrass Sate Sauce (Tương Ớt Sa Tế) – Bun Bobae.

I’d love to hear how your jar turns out — photos, tweaks, and favorite pairings are always welcome. Happy infusing!