— -- The flat white is coming. Flat what? Starting in stores nationwide on Tuesday after tests in limited markets and abroad, Starbucks is introducing a new drink to its menu that you've ...

The flat white is believed to have been invented sometime during the 1970s and 1980s in Australia and New Zealand - and has since become a coffee house staple in the nations' coffee shops.

And this is no Pumpkin Spice Latte; the flat white will be part of the “core menu,” sold year-round. Foodies love the flat white. Bon Appetit calls it “the next big thing in caffeine.” ...

Here's why that's a problem: A traditional flat white is served in a 160 millilitre cup (the equivalent to about 5.5 oz), Olivia Grants of London's St Clements Cafe told Business Insider UK last year.