Why the pop of a can is used in an advert with no can in it

A soft-drink brand ran a radio advert that opened with the crack-and-hiss of a can being opened. The advert was for a bottle promotion — no can was involved. Yet the pop outperformed every other opening tested, because it did not represent the product; it represented the sensation. The crack is cold; the hiss is fizz; the sequence is relief. The ear delivered a sensory experience the eye could only describe, and the listener was thirsty before the voiceover began.

What everyone sees

A listener hears the pop and fizz and feels a flash of thirst. The advert continues, but the craving is already set. The listener does not question why a can sound appears in a bottle promotion; the sensation the sound triggers is more real to the brain than the format of the packaging.

What is actually happening

Research on cross-modal sensory priming shows that sounds associated with consumption experiences activate the same brain regions as the experiences themselves. The pop-and-hiss of a can opening triggers gustatory and thermal imagery — cold, fizzy, refreshing — and studies confirm that auditory food cues increase craving and purchase intent independently of visual stimuli.

Why it stays hidden

The hidden mechanism is cross-modal sensory recall. The pop bypasses the rational channel and fires directly into sensory memory, producing a phantom thirst that no visual or verbal description can match. The sound is not a representation of the product; it is a direct line to the sensation, and the body responds before the mind catches up.