How do I use one-handed zoom in Maps?

Apple has added a one-handed zoom feature to Maps in iOS 11, how do I use it?

One-handed zoom can be useful in plenty of situations. To use it, simply double tap the screen but keep your thumb on the screen after the second tap (so double tap and hold), then slide your thumb up to zoom in or down to zoom out. Once you release you will have to double tap again to use the feature again.