I think alot of the food that they eat thet is 'poisonous' contains large amounts of Tanin. They wash and boil certain foods for sometimes hours or cook them underground under fires for a long amount of time. Further information: The Aborigines also knew how to make them digestible, by including all parts of the plant. For example, the Aborigines of Cooper Creek lived on nardoo, but when explorers Burke and Wills tried to eat it, they simply starved to death. This was because they did not include all parts of the plants which enables absorption of the nutrients.
By careful observation of what the animals ate.
Most ferns are not edible. But ostrich fiddleheads are edible. Ferns can not make other foods bad but some ferns are poisonous. Know what type of fern you are eating.
All foods have chemicals in them.
Australian Dairy Foods was created in 1942.
Because they are grown in Australia.
No, it is not poisonous, in fact it's added to many foods.
They eat edible foods.
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What the Australian Aborigines ate depended on where they lived. If they lived in desert areas they usually ate meat such as snakes, goannas and birds of prey, and also learned how to best use the desert plants. However, if they lived in more arable areas they ate plant parts such as fruits, berries, tubers and roots. Coastal aborigines were skilled fishermen, and they also dined on fruit bats. Aborigines were skilled, clever and stealthy hunters, learning to not only throw a spear with deadly accuracy, but also how to trap animals. There is some evidence that they also engaged in some agricultural practices (though obviously not the grains that the Europeans brought with them). Other foods included: witchetty grubs, water lily, kangaroo, emu, wild honey, yams, roots kelp, berries, small animals, salmon, honey ants, lizards, berries, water snakes, eel and edible flowers.
some foods can't be eaten and are only used for decorations therefore they are called unedible. whereas edible foods are most commonly referred to decorations that are eatable.
edible fruits...
mangosteen