Prevent cutting-board cross-contamination in a small kitchen

To avoid chopping salad on a board just used for raw meat, decide the work order and landing places first. Keep ready-to-eat food and raw ingredients in separate tool and plate workflows.

At-a-glance sequence
  1. Set ready-to-eat area
  2. Separate raw-food area
  3. Park used tools apart
  4. Wash before reuse
Separate ready-to-eat and raw-food areas, then wash used tools
Original workflow diagram, not a microbial-removal test.

Separate plates as well as boards

CDC advises separate boards or plates for raw meat, poultry and seafood versus produce, bread and foods eaten without cooking. A small note beside each work area can help keep its purpose clear.

AreaWhat to set out
Ready-to-eat foodClean board, knife and serving plate
Raw meat and similar foodsSeparate board, knife and uncooked-food plate
Used toolsWashing queue away from food

CDC: preventing food poisoning

An order for a narrow counter

Clear the ready-to-eat area first. Move prepared foods into a clean covered container before using the raw-food area. This order does not replace separate boards and tools. Add a washing step before a knife or tongs moves between areas.

Do not replace washing with a quick rinse

CDC advises hot, soapy washing of utensils, boards and counters after food preparation. A brief water rinse is not the washing step. Follow food-contact cleaning directions and the equipment maker’s care instructions.

CDC: preventing food poisoning

A worked example

Hypothetical dinner: prepare bread and salad first and cover them on a clean plate. Handle raw meat on another board, then park its knife and tongs for washing. Do not return cooked food to the unwashed raw-meat plate.

Common questions

Are different board colours enough?

Colour helps identify a task, but mixed knives and plates can undo the separation.

Is one board with washing equivalent?

This guide follows CDC’s separate-board advice. Never switch tasks without cleaning.

Official sources checked

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