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Harmless🍽️ Edible

🌰 Macadamia Nut

Macadamia integrifolia · Proteaceae

🦘 Australia
🧠 To remember it“The hardest nut to crack is also the most caloric” - 718 kcal per 100 g, one of the most energy-dense foods in all of nature.
Macadamia Nut — Macadamia integrifolia

🔍 Identify it without mistakes

Tree with dense, evergreen foliage, leathery leaves arranged in whorls, often finely serrated, bearing long hanging racemes of small cream-white flowers followed by round fruits with a very hard shell enclosing a single round, smooth seed (nut).

  1. leathery leaves in whorls of 3-4, margins sometimes spiny on young plants
  2. hanging racemes of small fragrant white flowers
  3. fruit with an extremely hard, almost spherical woody shell
Size12-18 m
Floweringlate southern winter-spring, mature fruits 7-8 months later
Habitathumid subtropical rainforests of southeastern Queensland and northeastern New South Wales, now widely cultivated in subtropical climates around the globe

⚠️ Not to be confused with

Macadamia tetraphylla and ornamental hybrids (Macadamia spp.)low - some wild species in the genus (notably M. ternifolia) contain cyanogenic glycosides and are bitter/toxic in their raw, unprocessed state

To tell them apart: only cultivated M. integrifolia and M. tetraphylla are commonly consumed without special processing; if in doubt about a bitter wild nut, do not eat it

🍽️ Eating it

Partskernel (nut)
Seasonsouthern summer-autumn
Tasterich, buttery, slightly sweet, crunchy then melting texture

Preparation : crack the very hard shell (requires a solid tool, a simple pebble usually won't cut it) then eat raw, roasted, or salted

718kcalEnergy
7.91gProtein
75.8gFat
13.8gCarbs
8.6gFiber
3.69mgIron
130mgMagnesium

USDA FoodData Central, raw macadamia nuts, per 100 g

💊 Healing with it

no major traditional medicinal uses documented; valued nutritionally for its extremely high energy density and monounsaturated fatty acids

Level of evidence : traditional use — USDA FoodData Central

⚠️ toxic to dogs (not to humans) - worth keeping in mind if a pet comes along on your expedition

🪓 Other bushcraft uses

  • very hard shell is sometimes used as slow-burning fuel
  • wood used locally in woodworking
Sources (1)

No entry replaces a certain identification in the field, or medical advice. When in doubt: don't eat it. If ingestion is suspected: poison control or 112/911.