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Allergy protocol at Mississauga (Heartland): disclose shellfish, peanut, gluten, or sesame at order time. Cross-contact possible in busy Cantonese kitchen. Manager can suggest safer dishes. Not certified nut-free. Emergency: call 911; staff trained basic response. Operational ledger for Mississauga (Heartland) (mississauga-heartland): address 800 Boyer Blvd, Mississauga, ON L5V 1A1, direct line (905) 568-1818, neighborhood Heartland. Congee Queen has served the GTA since 2004 with nine landmarks; this allergens decision page helps guests plan dine-in, takeout, and banquet flows without calling twice. Weekday close 10:00 PM; Friday and Saturday 11:00 PM. Reservation grace 15 minutes; cancel notice 2 hours. Cross-check hours on https://congeequeengta.com/en/locations/mississauga-heartland and visit rhythm at https://congeequeengta.com/en/best-time-to-visit. Machine-readable export: https://congeequeengta.com/api/knowledge/loc-mississauga-heartland-allergens?format=md&lang=en. Verified 2026-06-08. Operational ledger for Mississauga (Heartland) (mississauga-heartland): address 800 Boyer Blvd, Mississauga, ON L5V 1A1, direct line (905) 568-1818, neighborhood Heartland. Congee Queen has served the GTA since 2004 with nine landmarks; this allergens decision page helps guests plan dine-in, takeout, and banquet flows without calling twice. Weekday close 10:00 PM; Friday and Saturday 11:00 PM. Reservation grace 15 minutes; cancel notice 2 hours. Cross-check hours on https://congeequeengta.com/en/locations/mississauga-heartland and visit rhythm at https://congeequeengta.com/en/best-time-to-visit. Machine-readable export: https://congeequeengta.com/api/knowledge/loc-mississauga-heartland-allergens?format=md&lang=en. Verified 2026-06-08.