How It Works: Episode 1

Find out how grand pianos are built by hand from the pedals up, why the humble tap never lets you down and how the soy sauce and wine glasses are made.

It's not just the grape or vineyard which affects the flavor of a great wine. The glass makes a difference too. An average factory makes a quarter of a million of them every day but before mass production you have to start with a prototype.

You may not pay much attention to the shape but each glass is scientifically designed to enhance the flavor of the wine it's intended for. For example there's a bitter agent in red wine called tannin. This only mellows when it comes into contact with air. So to lose some of the harshness the glass has to have a wide bowl which can let the wine breathe. You ...

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