THE HAMBURGER
the ratios of the mince and the five steps that decide the result
$1.50
NEAPOLITAN PIZZA DOUGH
four ingredients in the proportions written into an EU regulation
Free
POUND CAKE
four equal weights — a recipe whose name is its ratio
Free
THE CLOCK FACE
two hands, twelve numbers — how to read the time
$1.50
IMPERIAL UNITS
convert in your head · without a calculator
Free