Ask this question in a cafe and you'll get a confident answer. Ask it in the next cafe along and you'll get a different confident answer. Ask it on the internet and you'll start a small argument between people in Auckland and people in Melbourne who are never, ever going to agree.
Here's the honest version.
The actual differences
A flat white is smaller. A latte is bigger. That's the most important thing, and it's also the thing most people get wrong when they're trying to explain it.
A flat white is typically served in a 150-160ml cup. A latte is usually 220-240ml, sometimes more. Because the flat white is smaller but uses the same amount of espresso (a double shot), the coffee-to-milk ratio is much higher. That means it tastes stronger, more intense, more coffee-forward. The milk is there to add texture and a little sweetness, not to dominate the cup.
The milk itself is also different. A flat white uses microfoam. Very fine, velvety, almost liquid foam that's been stretched carefully rather than whipped into a fluffy cloud. A latte has microfoam too, but because the drink is larger, there's more room for the foam layer on top. Cappuccinos go further still, with a proper thick foam cap. If you've ever ordered a flat white and gotten something that looked like a tiny cappuccino, with a pillow of froth sitting on top, that's the wrong call. The foam on a flat white should be silky and thin, blending into the milk below rather than sitting proudly above it.
The origin debate (strap in)
Both Australia and New Zealand claim the flat white. This is a fact. Both countries will defend this claim with the quiet but absolute certainty of someone who knows they're right.
The most credible version of history puts the flat white's invention in New Zealand, sometime in the early 1980s. The story goes that a cafe in Wellington (or Auckland, depending on who's telling it) was trying to make a cappuccino but the milk wasn't cooperating. The foam was flat. Someone ordered it anyway, called it a flat white, and a drink was born.
Australia, not wanting to miss out on a good thing, adopted it enthusiastically and made it their own. And to be fair, Australian cafes played a huge role in popularising it internationally. When flat whites started showing up on Starbucks menus in the UK and the US around 2010, it was largely because of the wave of Australian baristas working abroad. So both countries have a legitimate claim. New Zealand probably got there first. Australians will probably never fully concede this. That's fine. That's the relationship.
So which one should you order?
If you want to taste the coffee more, order a flat white. If you want something milder and a bit more milk-forward, order a latte. Neither is wrong. They're just different.
At home, the main thing that changes is your cup size and how much milk you use. For a flat white, pull a double shot into a 150ml cup and add around 100-110ml of well-textured milk. For a latte, use the same shot but a larger cup and more milk. The beans can be the same for both. You just need something with enough body to survive the milk, which is worth keeping in mind when you're choosing a bag.
If you want to experiment at home, our Indonesia Sumatra Mandheling has a lovely natural sweetness that works beautifully in both. The caramel notes in milk are genuinely something. Take a look at what we've got in the shop.
And if you have a strong opinion on the New Zealand vs Australia question, we'd genuinely love to hear it in the comments. I'm a kiwi in Australia so I'd like to think I have a handle on the story (although I may have been exclusively a Blend 43 man in the 80s).
