Flat whites are out and iced coffees are in - and there's a wide range of factors behind this change.

Cafes across the nation have noticed an uptick in younger customers reaching for cold drinks over hot.

Flight Coffee co-founder Richard Corney says there's been a rise in people buying iced drinks, as well as chilled RTD coffees.

"I don't have stats off the top of my head in terms of value now, but we've definitely seen a big consumer shift in how coffee's being consumed - mainly lead by Gen Z." 

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