Daun salam vs Bay leaf
The short answer
Two large dried leaves used the same way and unrelated. Daun salam is Syzygium polyanthum, a relative of clove and allspice, and is mild, faintly sour and slightly astringent. Bay is Laurus nobilis, a laurel, and is resinous and eucalyptus-like from cineole. They are substituted for each other because both go in whole and come out again, which is a resemblance in method rather than in flavour: an Indonesian dish made with bay tastes of bay.
Side by side
| Daun salam | Bay leaf | |
|---|---|---|
| Botanical identity | Syzygium polyanthum (Wight) Walp. | Laurus nobilis L. |
| Part used | leaf | leaf |
| Origin | Southeast Asia — Indonesia, Malaysia, Thailand and adjacent regions — where the tree grows wild and is planted in gardens as much as farmed. | The Mediterranean basin, where it has been cultivated and gathered since antiquity. |
| Flavour notes | tea-like, mild, astringent, savoury, faintly resinous | resinous, camphorous, herbal, faintly bitter |
| Heat | Scoville does not apply | Scoville does not apply |
| Flavour | Mild, savoury and faintly sour, and it works as a background rather than a note — a rendang made without it tastes flatter and no one can say why. This is the opposite of bay, which is identifiable in a dish. | On its own, bay is bitter, medicinal and frankly unpleasant — chewing a leaf is the fastest way to conclude it does nothing good. In a long simmer it does something quite different: it lifts and lengthens a savoury background without contributing anything identifiable as itself. It is a spice that is noticed by its absence, which is a rare and useful property. |
| Aroma | Faint. Tea-like and slightly astringent with a hint of the myrtle family’s resinous warmth, and nothing of bay’s eucalyptus. A leaf held to the nose gives very little, which surprises anyone expecting bay. | Resinous and faintly camphorous when a leaf is torn — eucalyptus and pine with a warm background. Whole and undisturbed it smells of very little, which is part of why bay is so often assumed to be inert. |
Can you swap them?
Substitution is directional: the answer is often different in each direction, and both are recorded.
Bay leaf
Not recommendedThe substitution the English name invites and the reason this record exists. Bay laurel is Lauraceae and cineole-led; salam is Myrtaceae and tea-like. Putting bay into a rendang adds a eucalyptus note the dish has never had, and it is identifiable in the finished pot where salam is not. The leaves look similar and share a translated name, and they have nothing else in common.
| Flavour | Aroma | Colour | Heat |
|---|---|---|---|
| unrelated | unrelated | close | n/a |
Works for
- Nothing. Recorded so that a reader following an English translation finds the warning rather than the instruction
Does not work for
- Rendang, soto, gulai and opor, which is every dish that calls for salam
- Any dish where the other whole aromatics are already carrying the identifiable notes
Cuisine: Substantial. Bay is a European and Mediterranean aromatic and reads as one; an Indonesian braise made with it tastes like a European braise with coconut in it.
Why there is no second option: Recorded as the only option precisely because it is a poor one, and saying so is the useful part. Daun salam is Syzygium polyanthum, a relative of clove and allspice; bay is Laurus nobilis and unrelated. They are substituted for each other because both are large dried leaves used whole in slow cooking, which is a resemblance in method rather than in flavour. Curry leaf and kaffir lime leaf were considered and are further away still. An Indonesian dish made with bay tastes of bay. Editorial judgement.
The better answer where salam is unavailable is to leave it out. A dish missing a quiet background aromatic is flatter; a dish with the wrong assertive one is wrong.
Which should you buy?
Daun salam
—
Bay leaf
Buy whole leaf, in the smallest quantity sold, and replace it far sooner than you think. Bay is the spice most likely to be sitting in a cupboard doing nothing: it looks the same at six years as at six months, and because nobody can taste it directly nobody notices it has stopped working. Ground bay solves nothing — it fades faster and cannot be removed. If you have a garden, a bay tree is the one entry in this dataset you can realistically grow, and fresh leaf is both better and free.
Full detail on daun salam and bay leaf, including evidence grades and sources for every claim above.