Flavoured fats & thickeners

Chili Crisp

辣椒油 · A chili-infused oil condiment originating from Sichuan and Cantonese cuisines, combining chili flakes and garlic in heated oil, producing a fiery, aromatic, and textural sauce used to season finished dishes at the table or during cooking.

Chili Crisp
Family · Flavoured fats & thickenersDifficulty · EasyMake-ahead · YesYield · 250g oil + 62g chili flakes + 25g garlic → ~300g finished chili crisp

The formula

10 parts oil : 2.5 parts chili flakes : 1 part garlic (by weight)

Scale all ingredients proportionally. Oil temperature must reach 180–200°C to bloom aromatics without burning. Cool to 130–140°C before adding chili flakes to develop color without scorching.

Identity

  • Neutral high-smoke-point oil as the fat carrier
  • Coarse chili flakes (not powder alone) for texture and color
  • Garlic (fresh or dried) for aromatic backbone
  • Low moisture content for shelf stability
  • Aromatics bloomed in hot oil, not simmered
  • Final condiment at room temperature, not strained

Ingredients

FatNeutral oil (peanut, soybean, sunflower)Must have smoke point above 200°C. Peanut oil is traditional for its nutty aroma.
AromaticsCoarse red chili flakesNot fine powder; retains texture. Sichuan erjingtiao or chaotianjiao preferred.
AromaticsFresh garlic cloves, thinly slicedAdds sweetness and depth. Can substitute with dried garlic flakes at 30% weight.
FlavorSichuan peppercorns (whole or ground)Adds má (numbing sensation). Essential in Sichuan-style; omit for Cantonese style.
SeasoningFine saltEnhances flavor and preserves. Approximately 1% of total weight.
FlavorBlack vinegar or Chinese rice wineA few drops added off heat for brightness in some versions.

Method

  1. 1Measure oil into a wok or heavy saucepan. Add Sichuan peppercorns if using and heat to 180–200°C over high heat.High temperature blooms the peppercorns and extracts their aromatic oils without scorching them.
  2. 2Add sliced garlic to the hot oil. Fry 30–60 seconds until golden and fragrant, not brown.Garlic transitions from raw to sweet at this stage; browning indicates burning and bitter compounds.
  3. 3Remove pan from heat. Allow oil to cool to 130–140°C (approximately 2–3 minutes).This temperature window allows chili flakes to release their color and capsaicin without instantaneous burning.
  4. 4Add chili flakes and salt. Stir gently. The oil should sizzle gently, not vigorously.Controlled addition prevents thermal shock that would burn the chili, preserving its red color and fruity heat.
  5. 5Transfer to a heatproof bowl. Cool completely at room temperature. Cover and refrigerate overnight to meld flavors.Resting allows oil to fully penetrate chili and garlic particles, improving both flavor integration and texture.

Techniques that matter

Temperature-controlled infusion

Chili flakes contain both oils (for heat) and sugars (for color). Too hot burns the sugars, turning the flakes black and bitter; too cool fails to extract the chili oils.

Two-stage garlic frying

Garlic fried in very hot oil develops nutty sweetness; adding it before chili prevents it from absorbing oil and becoming soggy.

Aromatic blooming

Volatile aromatic compounds in garlic and peppercorns are fat-soluble; hot oil opens their cellular structure and carries these molecules into suspension.

Variations & derivatives

Cantonese-style chili oil (辣油)Guangdong, Hong Kong

Minimal garlic, often no peppercorns. Thinner oil, brighter red color. Used primarily as table condiment for dim sum and noodles.

Sichuan-style mala chili oil (麻辣油)Sichuan Province

Heavy on Sichuan peppercorns for tongue-numbing. Often includes cumin, star anise, and black cardamom. Chili flakes fried until deep red, almost burgundy.

Chile con ajoCuba, Cuban-American communities

Similar principle: chili and garlic in oil, but used as mojo for black beans, rice, and roast pork.

Mole-infused oilMexico

Dried guajillo or ancho chilies infused in oil with garlic for enchiladas and tamales.

Used in these dishes

Substitutions

  • Sichuan peppercornsBlack pepper + pinch of citrus zestProvides sharpness but not true má numbness; approximates heat without numbing effect.changes result
  • Fresh garlicDried garlic flakesUse at 30% weight; rehydrates slightly in hot oil. More convenient but less sweet.
  • Coarse chili flakesChili powder + 1 tsp paprikaWorks but lacks texture; add toasted sesame seeds to restore crunch.changes result

Troubleshooting

Chili flakes turn black and taste burnt

Oil too hot when added, or continued cooking after additionStart with oil at 130–140°C; add flakes off primary heat. If burning occurs, discard and restart—burnt chili cannot be rescued.

Garlic burns to bitter black specks

Oil temperature exceeded 180°C or garlic added too earlyFry garlic separately in a controlled portion of oil to golden; add to finished chili oil off-heat.

Oil remains clear red with no heat or flavor

Oil temperature too low; insufficient extractionReheat finished oil gently to 150°C and hold 5 minutes; capsaicin needs heat to fully extract into fat.

Mold growth within 2 weeks

Insufficient dehydration of garlic or use of fresh herbs; contaminationEnsure all aromatics are thoroughly dried; add 1% salt by weight; store refrigerated; use clean, dry utensils.

Storage

Keeps 2–4 weeks at room temperature (if fully dehydrated); 2–3 months refrigeratedStore in airtight glass jar. Refrigeration is recommended for food safety and extended shelf life; if storing at room temperature, ensure complete dehydration, 1% salt, and use clean utensils. Reheat: Bring to room temperature naturally; if reheating is desired to restore fluidity, warm to 40–50°C maximum.

The science behind it

Fat-soluble flavor extractionMaillard reactionSuspension (informal emulsification)Shelf stability via dehydration