Is the brewed milk tea made of fresh milk?

First, mash the tea leaves and cook them in a white water pot. After the tea is boiled, cook until the tea is strong, remove the tea with a colander, continue to burn for a while, and scoop the tea while cooking. After it is concentrated, add a proper amount of fresh milk or milk powder, spoon it until the tea and milk are mixed, and then boil it to become fragrant milk tea.