Cross-contamination during prep is best prevented by which practice?

• A. Use separate prep areas and utensils for raw and ready-to-eat items; wash hands between tasks; sanitize surfaces between uses.
• B. Use the same prep area for all items to save time.
• C. Rinse surfaces with water only between uses.
• D. Do not sanitize surfaces between uses.

Answer: (A)

Preventing cross-contamination hinges on creating barriers between raw and ready-to-eat foods and keeping those barriers clean. Using separate prep areas and utensils for raw items, while also washing hands between tasks and sanitizing surfaces between uses, stops microbes from moving from raw meat or poultry to foods that won’t be cooked further. The separate spaces prevent direct and indirect contact, the dedicated tools ensure shared equipment doesn’t transfer bacteria, handwashing removes contaminants that could be picked up during handling, and sanitizing surfaces between uses kills remaining bacteria that cleaning alone might miss.

Using the same prep area for all items mixes raw and ready-to-eat foods and increases the chance of cross-contact. Rinsing surfaces with water only doesn’t reliably remove or kill pathogens, and not sanitizing between uses leaves any remaining microbes behind to contaminate next items.