The Correct spelling is: restaurant
Common misspellings of the word restaurant are:
How do you spell restaurant?. It is not erstaurant or estaurant or resaturant or resaurant or restarant or restaraunt or restaruant or restauant or restauarnt or restauran or restaurat or restauratn or restauraunt or restaurnat or restaurnt or resteraunt or restuarant or resturant or resturaunt or retaurant or retsaurant or rsetaurant or even rstaurant for that matter!
A place where meals are served to the public.
[French, restorative soup, restaurant, from present participle of restaurer, to restore, from Old French restorer. See restore.]