How to eat Bangkok street food confidently — the real rules locals use, not paranoid tourist advice.
Eat where Thais eat — high turnover means fresh ingredients, and locals won't return to a stall that makes them sick.
Food cooked to order in front of you; served hot; stall is busy; vendor looks healthy; utensils kept in water or regularly changed — all good signs.
Pre-cooked food left out at room temperature for hours (especially cut fruit without cover); shellfish from unknown sources; anything that smells off.
Cylindrical machine-made ice in restaurants is safe; irregular chunks are not; tap water is not safe; bottled water 10–20 THB everywhere.
Most Bangkok street food illness comes from alcohol, overeating unfamiliar food, or dehydration — the food itself is rarely the culprit.
