How It's Made
Season 4 Episode 20 - CO2 Cartridges and Pretzels
Discover how CO2 cartridges, pretzels and skating rinks are made.
Subtitles: English
Season 4
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S04:E20 - CO2 Cartridges and Pretzels
Discover how CO2 cartridges, pretzels and skating rinks are made.
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