Vegan substitute for Oyster sauce
Mushroom "oyster" sauce is a direct one-to-one swap and is sold in most Asian grocers and supermarkets.
Options, ratios and best uses
Mushroom stir-fry sauce
1:1Made from shiitake; same viscosity and sweetness.
Best for: stir-fries, noodles, greens
Soy + sugar + cornflour
1:1 as a quick fix2 tbsp soy, 1 tsp sugar, 1/2 tsp cornflour slurry.
Best for: emergency stir-fries
Hoisin (in some dishes)
3/4 amountSweeter and thicker — reduce other sugar.
Best for: glazes, marinades
Tips
- Add at the end of the stir-fry so it glazes
- Balance with rice vinegar if too sweet
- Check hoisin labels for honey
Avoid
- Using dark soy alone — too salty and bitter
- Boiling the sauce for long
Questions people ask
Does mushroom sauce taste the same?
Very close in cooked dishes — both rely on caramelised umami.
Is hoisin vegan?
Usually, but some brands add honey or shellfish extract.