What should the first sink in a three-compartment sink setup contain?

The first sink in a three-compartment sink setup should contain soapy water at least 110°F because this is the proper temperature for effective cleaning of dishes and utensils. The warm water helps to dissolve grease and food particles, allowing for better cleaning action of detergent. Ensuring that the water is at least 110°F provides the optimal conditions for the soap to work effectively, allowing for the removal of contaminants and ensuring that surfaces are prepared for the subsequent rinsing and sanitizing processes.

Using clean water at room temperature would not adequately support the cleaning of greasy or heavily soiled items, as lower temperatures can inhibit the effectiveness of the detergent. A sanitizing solution is used later in the third compartment to kill any remaining bacteria and pathogens after cleaning and rinsing. Water mixed with vinegar would not be suitable in this context, as it is not an appropriate cleaning solution for a three-compartment sink setup. Thus, the focus on using soapy water at the correct temperature is essential for maintaining food safety and hygiene standards.