Londonderry, NH - Organic yogurt maker Stonyfield Farm recalled Stonyfield Organic Fat Free Blueberry Yogurt, packaged in 6 oz cups, carrying product codes printed along the cup bottom that start with the following dates: April 13, 2008- Apris 14, 2008- April 15, 2008- April 25, 2008- and April 26, 2008. The recall was in response to consumer complaints reporting plastic or glass fragments in these particular batches of fat free blueberry yogurt. People who bite into or swallow a fragment could possibly be injured.