What does "saying goes" mean?
A "saying" is a common expression or a proverb that often contains advice or wisdom. "As the saying goes" is an idiom that is used at the beginning of a sentence to refer to a specific "saying". In the case of this video, the common saying is that too many cooks will ruin the broth of a soup. Ex: As the saying goes, the grass is always greener on the other side. Ex: As the saying goes, you are what you eat.