Lupins are flowering plants in the legume family (Lupinus), with several species cultivated for their seeds. The narrow-leafed lupin (Lupinus angustifolius) is the dominant crop species, and Australia — particularly Western Australia — is the world’s largest producer.
Traditionally, lupin seeds were soaked and brined to remove bitter alkaloids, then eaten as a snack — a practice still common around the Mediterranean. Modern sweet (low-alkaloid) varieties can be processed without extensive soaking. Lupin flour and protein are increasingly used in food manufacturing as a high-protein, high-fibre, gluten-free ingredient in bread, pasta, and snack foods. Lupin is a recognised allergen, particularly for people with peanut allergies, and must be declared on food labels in Australia.
How it's produced
Lupins are a broadacre crop well suited to sandy, acidic soils — conditions common across Western Australia’s wheatbelt, where the vast majority of Australia’s crop is grown. As a legume, lupin plants fix nitrogen in the soil, making them valuable in crop rotation with cereals.
The crop is sown in autumn and harvested in late spring or summer. Plants produce pods containing several flat, round seeds. At harvest, the crop is swathed or direct-headed, and the seeds are cleaned and stored. While most Australian lupin production goes to stockfeed and export, a growing proportion is processed into flour, flakes, and protein isolate for human consumption.
What it costs the planet (per kilo)
≈ Estimated from its category — typical for legumes & pulses, not measured for this item yet. Sources & methods →
What comes from this
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