I loooooove pork scratchings but since BSE and the offal ban they have been made mostly from rendered pigskin which is crackling. Now the marketing and public expectation is that crackling and scratchings are one and the same.
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Scratchings were what was left from making lard, most of the fat had been drained out - so the fatty layers yielded more lard than any pigskin. Mostly found in the Black Country UK (don't even think Birmingham).
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