Food Safety Report: Sweet Potato Chips, Kuromon Ichiba Market, 2 Chome-21 Nipponbashi, Chuo Ward, Osaka, Japan 1 year ago • details Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Stomach Pain Suspected source: sweet potato chips Onset: 4 to 12 hours Duration: Less than 4 hours Sick: Me