The video shows a person pouring a dark liquid from a red measuring cup into a bowl of batter and then whisking it. The person's hand is visible, and they are using a metal whisk to mix the ingredients. The bowl is placed on a wooden surface, and there is a blue bowl with eggs in the background. The liquid being poured appears to be vanilla extract, and the batter is a pale yellow color. The person continues to whisk the batter until it is well-mixed.