The food in the market is pretty okay. Those with sensitive digestion may want to go easy on the meat. Try any of the hotels in the section Gao/accommodation or one of the following addresses for a complete meal.
Restaurants
Le Camerouni
This is a cheap place to get a meal. It's in the area around thePalais de Justice.
Le Senegalais
A somewhat more expensive place doing better food. In the area around the Palais the Justice.