Are you foodish? food traveller? Celebfood? at least if you'll come to Bangkok don't forget enjoy some foods and beverages in Khaosan street. The most iconic dishes and drinks are Pad-Thai, Coconut Ice Cream, Extreme Insect Foods, Kebab and fruit juice.
When I was in Khaosan street, I saw some Pad Thai sellers, Pad Thai is the Thai's fried noodle and it is very iconic in this area, many tourists/travellers enjoy their dinner by this Pad Thai. The cost of the Pad Thai is start from 30 Baht-60Baht. You can add your own flavor topping such as salt, ketchup, sauce, dried chilli, baby shrimps.