WhiteWave Foods Co. is voluntarily recalling 11-ounce plastic single serve bottles of its Silk Soymilk Chocolate Flavor because it may contain undeclared milk protein. The individual bottles are printed with both a "use by" date of May 7, 2008, printed as 05 07 08, and a Universal Product Code of 2529360028. People who have an allergy or severe sensitivity to milk protein run the risk of a health problem or illness if they consume this product. The product was distributed nationwide through retail and foodservice outlets.