Occasionally I run across blogs or websites that have excellent reviews of city food of all stripes, from fancy places to street carts. The theme is "find the best food, wherever it is," across most cuisines and the updates usually have lists or photos of the best dishes at each restaurant and a recommendation about whether you should eat there.
Tyler Cowen's Ethnic Dining Guide in Washington, DC and surrounding area: http://www.tylercowensethnicdiningguide.com/
Hungry in Taipei: http://hungryintaipei.blogspot.tw/
Jonathan Gold's 101 LA Restaurants: http://ballots.latimes.com/lists/101-best-restaurants-jonathan-gold-2013/
I was curious if anyone has compiled a list of these for cities where they exist, ex. I'm going to Chennai, how can I find out what's best?