The phrase "to chop the cilantro" means to cut or mince the herb known as coriander, which is commonly used in many cuisines around the world. Cilantro has a distinct flavor and fragrance that adds depth to dishes like salsa, guacamole, curries, and salads. To chop cilantro involves using a sharp knife or scissors to cut off the stems and separate the leaves before finely chopping them into small pieces. This process is often done right before using the herb in a recipe to preserve its freshness and flavor.