About this showing of How Do They Do It?
How does one family in America make three quarters of the world's peppermint oil? Plus, how are performance-enhancing tennis racquets made.
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Previously on TV
Previously shown on High Street TV 4 on Tue 1 Sep 2026 at 23:30.
This showing was on High Street TV 4 at 23:30 on Tue 1 Sep 2026. See future airings below or open the main programme page for the latest TV times.
How does one family in America make three quarters of the world's peppermint oil? Plus, how are performance-enhancing tennis racquets made.
The next currently listed showing is Wed 2 Sep 2026, 22:30 on Discovery .History.
See all current showings