Food Safety Report: Caribou Coffee, Nicollet Avenue, Burnsville, MN, USA 11 months ago • details 35 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, other: Black tarry vomit Suspected source: Caribou coffee, specifically vanilla latte with skim milk.. icka Onset: Less than 4 hours Duration: 4 to 12 hours Additional information: Big icka, ewwa, & grossa