What is oyster sauce and what can you use instead?

Oyster sauce is a thick, dark, savoury sauce made from oyster extract cooked down with sugar and salt. It adds a rich, salty and slightly sweet flavour to stir-fries, noodles and marinades. If you run out, use hoisin sauce, or soy sauce with a little sugar. For a vegetarian version, use a mushroom based oyster sauce.

For kitchens that use it daily, Tiger Tiger supplies oyster sauce by the case through our trade register.

What Does Oyster Sauce Taste Like?

It tastes savoury and deep, with a gentle sweetness and a lot of umami. It does not taste fishy once cooked. Its thick texture means it clings to food and gives stir-fries a glossy finish.

What Is Oyster Sauce Made From?

The base is oyster extract, which comes from cooking oysters down. Makers add sugar and salt, and usually a thickener such as cornflour for body. Some brands add soy sauce for colour. Cheaper versions use more thickener and less extract, so the flavour is thinner. Read the ingredients list when you compare suppliers.

Allergen note: oyster sauce contains molluscs, which is one of the 14 major allergens in the UK. Make sure your menu and staff briefings reflect this.

How To Use Oyster Sauce

Stir-fries: add a spoonful near the end, with soy sauce, for a glossy coating.
Greens: drizzle over steamed pak choi or choy sum, a classic Cantonese dish.
Noodles and fried rice: a small drizzle adds depth.
Marinades: mix with soy sauce, garlic and a little sugar for beef or chicken.
Glazes: brush on roast meats near the end of cooking.
Sauces: use as a base for brown stir-fry sauce, loosened with stock or water.

For more on how oyster sauce sits next to soy, hoisin and the rest, see our guide to Asian sauces. Browse the full sauces category to see what else can sit on the same order.

Oyster Sauce Substitutes

Substitute	How to use it	Note
Hoisin sauce	Use the same amount, then taste	Sweeter and spicier, so add less sugar
Soy sauce plus sugar	Add a little sugar to soy sauce until it tastes balanced	Thinner, so you may need cornflour
Mushroom oyster sauce	Swap one for one	Vegetarian, with a similar savoury depth
Dark soy sauce	Use a smaller amount	Colour and salt, but little sweetness

Is There a Vegetarian Oyster Sauce?

Yes. Mushroom based oyster sauce is made without oyster extract and gives a similar savoury, glossy finish. This helps a menu that needs a vegetarian or pescatarian stir-fry sauce. Check the label and your supplier's allergen details before you describe a dish as vegetarian.

Why Buy Oyster Sauce in Bulk?

Oyster sauce goes into many dishes across a pan-Asian menu, so a kitchen can use a lot in a week. Buying by the case means fewer orders, a steadier price per bottle and less chance of running out mid service. If you stock soy sauce, sweet chilli and other pantry staples too, one supplier account can cover the lot.

Our top 5 Asian pantry essentials post lists the other staples worth ordering with it.

Frequently Asked Questions

What is oyster sauce made of?

Oyster extract, sugar and salt, usually thickened with cornflour. Some versions add soy sauce for colour.

What can I use instead of oyster sauce?

Hoisin sauce, soy sauce with a little sugar, or a mushroom based oyster sauce all work. Taste and adjust, as each has a different level of sweetness and salt.

Is oyster sauce vegetarian?

Standard oyster sauce is not, as it contains oyster extract. Mushroom based versions are made for vegetarians. Check the label.

Does oyster sauce need to be kept in the fridge?

Follow the storage advice on the label. Most brands should be kept in the fridge once opened.

Can I buy oyster sauce in bulk for my restaurant?

Yes. Tiger Tiger sells oyster sauce by the case to restaurants, takeaways, caterers and shops. Order through our trade register.

Tiger Tiger sells in bulk, not single bottles. If you run a kitchen, takeaway or shop, stock oyster sauce by the case. Fill in the trade register to get started.