I am reading an
.ibooks file which I downloaded from the iBooks Store in the macOS iBooks app. On iOS, to zoom in on the text you can simply double tap or use a pinch gesture. However, it doesn't seem like you can zoom in on an iBook in macOS iBooks with those same gestures on the trackpad. Choosing Window > Zoom only affects the size of the window, and unfortunately not the size of the text.
So, is there any way to zoom in on a book in macOS iBooks?