Prepare for the health inspector and avoid cross contamination by updating your cutting boards and adding different colors to distinguish different uses. Out of concern for those with celiac disease and other serious food allergies, San Jamar introduced the Allergen Saf-T-Zone™ Purple Allergen system. Now that purple is the recognized allergen color in kitchens (at least, it should be) you can find all sorts of tools in purple to help keep them separate from serious allergens like flour and tree nuts.