Food Safety Report: Le Pain Quotidien, Pennsylvania Avenue Southeast, Washington D.C., DC, USA 1 year ago • details 27 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain Suspected source: Kale Onset: Less than 4 hours Duration: 4 to 12 hours Sick: Me Additional information: Nausea, diarrhea, abd pain after consuming warm grain bowl.