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Why we call it tin foil when it is not tin

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We still casually call it 'tin foil,' but wrapping your leftovers in actual tin would ruin your night. Early 20th-century companies switched to aluminum not just because it was cheaper, but because tin imparted a horrifically bitter metallic flavor to anything it touched. Aluminum saved our leftover pizza from tasting like pennies.

Why we call it tin foil when it is not tin
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