The humble cup of tea might not seem like a big deal, but it's worth $4.5bn (£3.16bn) to the economy of Taiwan.

It used to be one of the island's best known and most consumed products, but these days, coffee and sweeter, sugar-filled cold drinks are more popular.

So, some businesses are trying to revive an appreciation for what was once an integral part of society.

The BBC's Cindy Sui reports from Taipei.