Food Safety Report: Oc & Lau 2 Restaurant/Bar, Westminster Boulevard, Garden Grove, CA, USA 1 year ago • details 42 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills Suspected source: Clams Onset: Less than 4 hours Duration: 4 to 12 hours Additional information: The cause may have been the clams or fish in the hotpot