1. We read the menus of the cafes we follow in each city and match each line to an item by its name. A flat white also counts a latte or cappuccino, the way most cafes price them the same.
2. Each cafe counts once, at its main price for the item. Add-ons, large sizes, combos and retail packs are left out, and prices far from the city's usual are set aside as likely mistakes.
3. The typical price is the middle price: half the cafes charge less, half charge more.
4. The thin line or pale band runs from the 10th to the 90th cafe in every 100, so it covers the middle 80% of cafes.
5. A city needs at least 8 cafes with a price before we show a figure, and an area 5. Below that we say not enough cafes yet.
6. Australia puts every city's cafe prices together, each cafe once, and works the typical price out again. We never add cafe counts from different cities into one figure.
7. Extras (alternative milk, decaf, syrup and an extra shot) are what each cafe adds for one, its cheapest such line.
8. Figures are for the month shown and update as menus are read again. We never name a cafe for its prices.

How we read menus, in full