Final answer:
The process described is making a macchiato.
Step-by-step explanation:
The process described in the given instructions is making a macchiato.
Steam whole milk on the tall line: This refers to steaming a specific amount of whole milk to a certain level on the steaming pitcher.
Prep 2 ristretto shots: This means preparing two shots of ristretto, which is a concentrated form of espresso.
Finish by pouring in, leaving a big dot: This is the final step of making a macchiato, where the milk and espresso are combined, and a big dot is created on top.