Food ordered in Istanbul's restaurants is very safe and delicious. However, as with travel to any other country use common sense. Choose foods that are cooked thoroughly-if you have a question about the preparation of an unfamiliar dish, ask your server. Water is treated and safe for daily use, but you shouldn't drink the water out of the tap, use (cheap and readily available) bottled water instead. As a rule, most restaurants will serve you water that is in a sealed bottle to your table.