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Anise myrtle

Also known as aniseed myrtle, ringwood, Syzygium anisatum, Backhousia anisata

Quick answer

The leaf of an Australian rainforest tree that tastes strongly of aniseed, because its oil is mostly anethole — the molecule of aniseed, fennel and star anise. Used dried and ground in baking, desserts and sauces.

Tastes of
aniseed, liquorice, sweet, green, fresh
Heat
Scoville does not apply
Goes with
Macadamia
If you have none
Aniseed — see the limits

Flavour and aroma

Flavour:

Aniseed, with some sweetness and a slight cooling on the palate. That is how a trained panel of ten in Queensland described a commercial sample of dried, chopped leaf, received in 2009 and tasted in a semolina base; the same panel gave its smell as aniseed, menthol and herbal, and aniseed was a word it used for no other native ingredient it assessed.

Reasonable evidenceSources: Defining the Unique Flavours of Australian… (Table 1; Table 7; Results, herbs and spices)

One commercial sample from one supplier. The panel did not record bitterness.

Aroma:

Strong, sweet aniseed and liquorice, with a fresh, green, faintly eucalyptus edge.

Colour:

Green dried leaf or green-brown powder.

Culinary conventionDirectly observable.
Texture:

Used as a fine powder or crumbled leaf.

Culinary conventionDirectly observable.

Heat

Pungency scale: none — this spice is not pungent

Scoville: Not applicable — No capsaicinoids; Scoville does not apply.
In practice:

No heat.

Culinary conventionNo pungent principle is recorded.
Key compounds:
  • Anethole — Between about seventy and ninety-four per cent of the leaf oil in the commonly grown anethole type, and the whole of the aniseed character.(what anethole is)
  • Estragole — Methyl chavicol, a minor component in the anethole type and the major one in a second, less common chemical type of the tree.(what estragole is)

Pairings

Ranked by how well established the combination is, with the reason and the caveats attached.

Foods

Macadamia

Strong

Anise myrtle is used to flavour macadamia nuts in the Australian native-food trade — two native ingredients, the rich nut carrying the aniseed well.

Other spices and blends

Sold side by side and combined in native-spice blends and baking; the citral of lemon myrtle and the anethole of anise myrtle are a lemon-and-aniseed pairing familiar from European baking.

If you have no anise myrtle

What to use instead, and — more usefully — where each replacement stops working.

Aniseed

Good match

Use: ~1× by volume — Ground aniseed for ground leaf, tasting as you go; both are strong.

The same molecule, anethole, dominates both, so the aniseed character carries. Anise myrtle has a greener, fresher edge that the seed lacks.

How the replacement compares on each sensory axis
FlavourAromaColourHeat
closeclosedifferentn/a

Works for

  • Baking and desserts

Does not work for

  • Dishes presented as Australian native food

Preparation and use

Use by the pinch: a quarter teaspoon of ground leaf flavours a batch of biscuits. Infuse the whole leaf in warm milk or syrup and strain.

Culinary conventionCommon native-food practice; the leaf is intense.
Culinary uses:

A modern Australian flavouring used in shortbread, milk-based dishes, pasta and with macadamia nuts, and by the food and drink industry.

What each treatment does:
  • baking — Ground leaf baked into shortbread and biscuits, where the aniseed holds.
  • infusing — Steeped in milk, cream or syrup for desserts, then strained.
Traditional practiceRecorded native-food practice.

Storage and freshness

Storage guidance by form
FormGood forConditionsFridge
GroundNot establishedCool, dark, dry and sealed.No
How to test it:

It should smell strongly of aniseed as soon as the jar is opened.

Culinary conventionFollows from the composition recorded above.
Signs it has gone:
  • A weak or dusty smell
Culinary conventionObservable indicator.
Why it fades:
  • Loss of anethole and the lighter volatiles once ground
Culinary conventionFollows from the composition recorded above.

Quality is not the same as safety

Faded anise myrtle is a quality matter only.

Forms

These forms differ enough to need separate answers: treating them as interchangeable produces a dish that is wrong.

Ground leaf

The usual form, for baking and sprinkling.

Dried leaf

Whole or crumbled leaf, for infusing.

Botany

Scientific name:
Syzygium anisatum (Vickery) Craven & Biffin
Established factSources: GBIF Backbone Taxonomy

Formerly Backhousia anisata, under which it appears in older writing.

Family:

Myrtaceae

The myrtle family, with lemon myrtle, cloves and allspice.

Part used:
leaf

The leaves, fresh or dried and ground.

The plant: Not yet established — Not compiled to a citable standard for this profile.

Commonly confused with

  • Lemon myrtle

    The better-known Australian myrtle leaf, sold beside it and used the same way — lemon myrtle for citral, anise myrtle for anethole. They are different plants in different genera.

  • Aniseed

    The same dominant molecule, anethole, from an unrelated plant. Anise myrtle is a leaf used by the pinch and carries a greener, slightly eucalyptus edge.

How it is grown

The plant, how it is propagated and farmed, what threatens the crop, and where it is produced now. Crop diseases here are plant health, not food safety.

TreeSemi-domesticated
What is harvested:

The leaves of a dense rainforest tree, which hold 1.3–2.0 per cent oil by fresh weight. Trees come in two chemical forms: an anethole form, whose oil is about 95 per cent anethole and is the one wanted for an aniseed flavour, and a less frequent form dominated by methyl chavicol.

Where it was domesticated:

Wild only in rainforest at a few places in the Bellingen and Nambucca valleys of northern New South Wales, where it can reach 50 m. The leaf of commerce comes from trees grown mainly in mixed-species plantations on the east coast of Australia; how those plantations are propagated and cut has not been described in a source read here.

Wild populations:

In its natural state the tree is regarded as rare and endangered, its wild range being a few valley rainforests; that describes the wild populations, not the plantations. Unusually for its genus its fruits are dry and its seeds can be dried and banked, and seed is held at the Australian PlantBank, though ageing tests suggest it is short-lived in cold storage; living collections raised from cuttings are kept in tissue culture as well.

Where it comes from and how it is made

Origin:

The subtropical rainforests of north-eastern New South Wales, where it is a rare tree in the wild.

Reasonable evidenceSources: GBIF Backbone Taxonomy
Grown in:
  • Australia (Northern New South Wales and south-east Queensland) — origin. Grown in plantations for the native food industry.
Cultivation:

Grown in plantations for leaf, which supplies the flavouring and native-food trade.

Climate:

Subtropical rainforest.

Reasonable evidenceSources: GBIF Backbone Taxonomy

Buying and quality

Whole or ground:

Ground is the practical form; buy it in small quantities because it fades.

Editorial judgementFollows from the storage behaviour recorded above.
What to look for:
  • From a native-food supplier, in a small sealed pack.
  • A strong aniseed smell on opening.
Culinary conventionPractical indicators reflecting the storage behaviour recorded above.

History and trade

A plant with a history of Indigenous use that entered commercial cultivation with the Australian native food industry and is now used as a flavouring by the food and drink trade.

Culinary conventionStated in the composition literature as context; no history source documents the chronology, so no dates are given.

Culture

Recorded by tradition rather than merged into one narrative — these are genuinely different practices.

Modern Australian cooking

Used in shortbread, milk-based desserts, ice cream, sauces for fish and in blends of native spices — a modern, commercial use, distinct from and far younger than the Aboriginal knowledge of the plant, which is not represented here.

Traditional practiceDescribes the documented contemporary use and states the boundary with Indigenous knowledge rather than blurring it.
  • In shortbread
  • In milk desserts
  • With seafood

What we do not know

Published openly. A gap we have named is more useful than a gap we have filled with plausible prose.

68% of what we look for is answered14 marked unknown or not applicable6 sources citedEditorial confidence: medium

Not yet established for anise myrtle:

  • Propagation
  • Archaeological evidence
  • Historical timeline
  • Traditional medicinal context
  • Regulatory limits
  • Traditional uses

How we grade evidence · The source library