Additives
Once the milk has ripened, you can add other ingredients that may be optional or may be necessary for a specific type of cheese. These could be: coloring, additional cultures, calcium chloride, or lipase (for flavor in certain cheeses). These must be added one-at-a-time prior to adding the rennet. They are usually diluted in a small amount of cool bottled water prior to adding them to the milk. And, they must be well incorporated into the milk by stirring gently from bottom to top.