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Oyster Sauce

The Quirky Foodster Team

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10 min
Prep
60 min
Cook

Ingredients

  • Dried oysters (or oyster extract) — 100 g (3.5 oz)
  • Water — 500 ml (2 cups)
  • Soy sauce — 30 ml (2 tbsp)
  • Sugar — 20 g (4 tsp)
  • Cornstarch — 10 g (1 tbsp)
  • Salt — to taste

Method

  1. Simmer dried oysters in water over low heat for 45-60 minutes until reduced by about half and deeply flavourful.
  2. Strain the liquid through a fine sieve or cheesecloth, pressing to extract maximum liquid; discard solids.
  3. Return strained liquid to a clean saucepan; add soy sauce and sugar.
  4. Mix cornstarch with a little cold water to form a slurry, then whisk into the sauce.
  5. Simmer 5 minutes until thickened and glossy; season with salt to taste.

Cultural Background: A savoury, caramel-coloured sauce made from reduced oyster extracts, oyster sauce was reportedly invented accidentally in 1888 by Lee Kum Sheung in Guangdong when a pot of simmering oysters was left too long, becoming a defining Cantonese pantry staple.

Tips: • Long, slow simmering of the dried oysters extracts the deepest, most concentrated flavour. • This sauce keeps very well due to its concentrated, slightly salty and sweet profile.

Variations: • Use vegetarian 'oyster' sauce made from mushroom extract as a plant-based alternative. • Add a splash of dark soy sauce for a deeper colour.

Storage: Refrigerate in a sealed bottle up to 2 months.

Reheating: Not applicable; used cold or added during stir-frying. Nutrition (per serving) Approx. 15 kcal, 0.5 g protein, 0 g fat, 3 g carbohydrate per 15 ml serving.

FAQs: What is oyster sauce traditionally used for? A stir-fry seasoning, marinade component, and finishing sauce across Cantonese and broader Chinese cooking. Is there a vegetarian version? Yes, mushroom-based 'vegetarian oyster sauce' replicates the umami depth without any seafood.