Apple posts 'Behind the Scenes' video for popular Cookie Monster Siri ad

The new video consists mostly of alleged outtakes from the original ad, such as Cookie Monster being hit in the head by a film slate. It continues the plot however, showing him actually finishing and eating the cookies, as well as wishing Siri goodnight when he goes to bed.

"Timer" has become one of Apple's most popular TV commercials in recent memory, chalking up nearly 9 million views on the company's official YouTube channel.

While "Hey Siri" has been available to trigger Siri for some time, traditionally the option has only worked with a device connected to power, unlike Android's "OK Google."

More recent iOS devices support "Hey Siri" while running off battery power. These include the iPhone 6s/6s Plus, the iPhone SE, and the 9.7-inch iPad Pro, but not the 12.9-inch Pro.