Chinese Cooking Oils Explained

A stir-fry made at home in olive oil produces a dish that tastes noticeably different from the same recipe made in a Chinese kitchen. The oil is a significant part of the reason. Chinese cooking uses several different fats for different purposes — not interchangeably, but functionally — and understanding which one goes where makes a concrete difference to flavour.

Peanut oil

Peanut oil (花生油, huāshēng yóu) is the standard cooking oil for Cantonese stir-fries and deep-frying. Smoke point around 230°C, which makes it suitable for the high-heat wok techniques that Cantonese cooking requires. The flavour is mild and slightly nutty — present enough to contribute to the dish without dominating it.

In Guangdong and Hong Kong, peanut oil is what most home cooks and restaurants default to. Peanut allergy is a practical consideration — a visitor with a nut allergy should ask specifically about the cooking oil in Cantonese restaurants, as peanut oil is less visible in a dish than peanuts but equally problematic.

For deep-frying, peanut oil is stable at temperature and imparts less flavour than cheaper blended oils. It is one of the oils worth buying if cooking Chinese food at home.

Rapeseed oil

Rapeseed oil (菜籽油, càizǐ yóu) — not the refined Western rapeseed/canola oil, but the more pungent, darker Chinese version — is the dominant cooking oil in Sichuan, Guizhou, Chongqing, and Yunnan. Its flavour is distinctly more assertive than peanut oil: green, slightly sharp, with a note that some describe as mustard-adjacent.

In traditional Sichuan cooking, rapeseed oil is heated to smoking in the wok before the aromatics go in. This high-heat step burns off the green note and produces a more mellow, rounded oil. The technique is called "ripe oil" (熟油, shú yóu) — oil that has been cooked to remove its raw flavour. This is one reason Sichuan dishes taste different when made by someone who skips this step.

Cold-pressed Yunnan rapeseed oil, used in Yunnan cooking, has a gentler flavour than the Sichuan variety and is sometimes used for cold dressings as well as cooking.

Lard

Lard (猪油, zhū yóu) has not disappeared from Chinese cooking in the way it has from Western kitchens. It is still used in northern noodle doughs (the fat that makes them slightly richer and more elastic), in Cantonese pastry (the flaky pastry layer of certain dim sum items relies on lard for the correct texture), and in fried rice — lard-fried rice has a distinctive flavour that vegetable oil does not replicate.

In some parts of Hunan and Sichuan, a bowl of plain rice with a small amount of lard and light soy sauce is considered a proper simple meal. In Shanghai, adding a small amount of lard to soup noodles at the end is traditional — it adds richness and gloss.

Lard is present in dishes where it is not visible. Visitors with dietary restrictions on pork fat should inquire at restaurants, particularly for dim sum pastry items and fried rice dishes.

Sesame oil

Toasted sesame oil (芝麻油, zhīma yóu) is a finishing oil only. Its smoke point is too low (175°C) for cooking — heated to cooking temperature, it burns and turns bitter. It is added to cold dishes as a dressing, drizzled into soups or noodles at the end of cooking, and used in dipping sauces.

The dark sesame oil used in Chinese cooking (made from toasted sesame seeds) is quite different from the lighter sesame oils used in Middle Eastern cooking (made from raw seeds) — they are not interchangeable. The dark toasted version has an intense, nutty-smoky aroma that is one of the recognisable flavour notes of Chinese cold dishes and dumpling dipping sauces.

A small bottle of good sesame oil is a practical kitchen souvenir — it lasts for months and transforms simple noodle dishes and cold salads.

Sichuan chilli oil

Chilli oil (红油, hóng yóu) is made by pouring hot oil over dried chilli flakes, Sichuan peppercorns, and sometimes additional spices (star anise, cinnamon, bay leaf) to bloom them and extract their colour and fragrance. The result is deep red, fragrant, with layered heat and the characteristic ma (numbing) quality of Sichuan pepper.

Chilli oil functions both as a condiment and as a cooking ingredient. Applied to cold noodles or dumplings, it is a condiment. Stirred into a sauce base for mapo tofu or twice-cooked pork, it is a cooking ingredient. The bottled variety (Laoganma is the best-known brand) uses slightly different methods but produces a comparable product.

The smoke point of chilli oil is not the relevant variable — the oil has already been heated; it is added to dishes rather than used as a primary cooking medium.

Other oils in Chinese cooking

Soybean oil (豆油, dòu yóu): the most widely used industrial cooking oil in Chinese home cooking and street food — relatively neutral flavour, high smoke point, and cheap. The cooking oil in most Chinese canteens and mid-range restaurants.

Camellia oil (茶油, chá yóu): from the seeds of the Camellia oleifera tree, used in Hunan and parts of Fujian and Zhejiang. Light golden colour, high in oleic acid, mild flavour. Considered a premium product in the regions where it is produced.

Practical guide

For cooking Chinese food at home:

• Cantonese stir-fry: peanut oil or neutral vegetable oil
• Sichuan dishes: rapeseed oil, heated to smoking before aromatics
• Cold dishes and dipping sauces: finishing with toasted sesame oil
• Fried rice: small amount of lard if available, otherwise peanut oil
• Chilli oil: Laoganma or homemade as a condiment on virtually everything

Using olive oil for Chinese stir-fries is not wrong, but it introduces a Mediterranean flavour note that sits oddly against Cantonese or Sichuan seasonings. Neutral vegetable oil or peanut oil produces a more accurate result.