In the video, a person is seen holding a lemon and a cup of salt. The person squeezes the lemon over the salt, causing the juice to mix with the salt. The person then rubs the lemon on the salt, creating a fizzing reaction. The person repeats this process several times, squeezing the lemon and rubbing it on the salt. The video captures the sound of the fizzing and the visual of the lemon juice mixing with the salt.