What is the first step in setting up a manual dishwashing three-compartment sink?

The first step in setting up a manual dishwashing three-compartment sink is to clean and sanitize each sink and drain board. This is essential because it ensures that the area where you will be washing and sanitizing dishes is free from any contaminants. If the sinks and surfaces are not properly cleaned and sanitized before use, any remaining bacteria or residues could contaminate the dishes being washed.

When preparing to wash dishes, it's important to create a safe and hygienic environment to prevent cross-contamination. By starting with clean and sanitized sinks, you establish a foundation for effective dishwashing procedures. This step is crucial in maintaining food safety standards and ensuring that all washed items are safe for use.

The other steps listed, such as filling each sink with water and sanitizer, rinsing or scraping items, and providing a clock with a second hand, are important as well, but they come after ensuring that your cleaning area is properly sanitized. The correct sequence focuses first on preventing contamination before proceeding with the washing process.