How should wooden cutting boards be maintained to prevent bacterial growth?

• A. Clean thoroughly, sanitize, dry completely, and oil periodically; replace if deep grooves or cracks appear
• B. Soak in water overnight
• C. Only wash with soap
• D. Use metal bristles to scrub

Answer: (A)

Maintaining wooden cutting boards to prevent bacterial growth relies on four steps: clean thoroughly, sanitize, dry completely, and oil periodically. Washing with warm soapy water removes food particles, but you then need to sanitize to kill any remaining microbes. Wood is porous, so moisture left in the surface can invite bacteria; drying completely—ideally by towel-drying and standing the board to air-dry—helps prevent this. Oiling with a food-grade mineral oil (and/or beeswax blend) keeps the wood hydrated and less prone to cracking, which can trap bacteria. If deep grooves or cracks appear, replace the board because those crevices can harbor bacteria impossible to clean fully. Soaking in water is harmful to wood, soaking swells and warps the board; cleaning with soap alone doesn’t kill bacteria; metal bristles can damage the surface and create more crevices.