Tofu
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Tofu is a great source of protein and is often used as a meat substitute by vegetarians – it’s mainly made up of soybeans, water, and coagulant. However, some tofu is made from unfermented soy, which limits the amount of protein.
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One report by food safety inspectors in China found some pretty disturbing evidence in the tofu-making process. Iron sulfate, livestock, and even human feces were being used to speed up the fermentation process.
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